The epidermis is the topmost layer of skin that can touch, see and feel. This Bodytomy post has more information. The skin has an important job of protecting the body and acts as the body's first line of defense against infection, temperature change, and other challenges to homeostasis. Shedding or loss of club hair happens when the cycle is re-initiated and the newly growing hair follicle pushes the old one out. Terminal hairs are longer, thicker and more heavily pigmented. Match the text descriptions below with the appropriately feature that is labeled by a letter in the tissue section. For the part of the female reproductive system of seed plants, see, Martini & Nath: "Fundamentals of Anatomy & Physiology" 8th Edition, pp.158, Pearson Education, 2009, https://en.wikipedia.org/w/index.php?title=Integumentary_system&oldid=1002287496, Articles with unsourced statements from January 2018, Articles with unsourced statements from March 2017, Creative Commons Attribution-ShareAlike License, Act as a receptor for touch, pressure, pain, heat, and cold (see, Formation of new cells from stratum germinativum to repair minor injuries, This page was last edited on 23 January 2021, at 18:37. Introduction to the musculoskeletal system, https://en.wikipedia.org/wiki/Mucocutaneous_zone, Nail plate, nail folds, nail matrix, nail bed, hyponychium, Adipose tissue that increases skin mobility, insulates the body, and acts as a shock absorber, Pacinian corpuscles, Meissner corpuscles, specific stimuli receptors, Glassy membrane (basement membrane of hair follicle). 1. 3. Sometimes called subcutaneous tissue. The dermis is the middle layer of skin, composed of dense irregular connective tissue and areolar connective tissue such as a collagen with elastin arranged in a diffusely bundled and woven pattern. The pathology also involves abnormal changes of the apocrine glands. There is a perfect match between the nail bed and plate, forming a seal, which prevents microbial invasion and debris collection. The cutaneous circulation consists of many capillary and arterio-venous anastomoses, particularly in the extremities to facilitate thermoregulation. Each word is used twice. The specialized cells that produce the pigments that contribute to skin color are called __4__. Describe the dermis and the 2 major regions that the dermis consists of. Kim Bengochea, Regis University, Denver, Author: The skin is anatomically organized as follows, from superficial to deeper layers: (Memorise these layers with the mnemonic: "British and Spanish Grannies Love Cornflakes", see video below). The average rate of hair growth is between 0.2 and 0.44 mm in 24 hours. ... § Three types of muscle tissue that vary in structure, location, and control mechanisms. These are large glands specifically located in the axillae, perianal region, nipples, periumbilical region, prepuce, scrotum, mons pubis, labia minora, nail bed, penis and clitoris. The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or damages from outside. The majority of sweat glands are eccrine. The hair follicle is the sac containing the hair, out of which it grows. Musculocutaneous vessels arise from intramuscular vasculature after piercing muscles and spreading out in the subcutaneous tissue. It invaginates into the dermis and is attached to the latter, immediately above it, by collagen and elastin fibers. Nails are homologous to the stratum corneum of the epidermis and contain a variety of minerals, such as calcium. From the interior to the exterior, these include: You can image these layers as tree rings in a cross-section of the hair follicle since they are concentric cylinders. Sebum is crucial in the epidermal barrier and the skin’s immune system. The skin has a significant capacity for renewal and crucial roles for the normal functioning of the human body. Broadly speaking, the integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. The nail plate is a rectangular and convex structure embedded within the nail folds. Register now The dermis is directly attached to the periosteum of the distal phalanx and it is richly vascularized. Uruj Zehra MBBS, MPhil, PhD The skin also takes part in a variety of biochemical synthetic processes, such as vitamin D production under the influence of ultraviolet radiation, but also the production of cytokines and growth factors. The integumentary system is supplied by the cutaneous circulation, which is crucial for thermoregulation. They occur at orifices in areas like the lips, nostrils, conjunctivae, urethra, vagina, foreskin and anus. The fats contained in the adipocytes can be put back into circulation, via the venous route, during intense effort or when there is a lack of energy-providing substances, and are then transformed into energy. Also, choices may be used once, more than once, or not at all: A. The majority of the skin on the body is keratinized. Bone. Integumentary system: want to learn more about it? At such regions, epithelium transitions to epidermis, lamina propria changes to dermis and smooth muscle becomes skeletal muscle. The direct cutaneous are derived directly from the main arterial trunks and drain into the main venous vessels. If you want to find out more about the anatomy of the skin, have a look at this article. Kenhub. No differentiation or apoptosis happens. Title: Apr 1-8:22 PM (11 of 33) Epithelial Tissue . Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. Figure: Anatomy of the human skin. These layers serve to give elasticity to the integument, allowing stretching and conferring flexibility, while also resisting distortions, wrinkling, and sagging. Vellus hairs do not project beyond their follicles in some of the areas, however, they are short and narrow and cover most of the surface of the body. This condition is closely linked to excessive sweating (hyperhidrosis). The deeper layer … However, the duct emerging from the gland opens inside the pilary canal above the duct of the sebaceous gland or directly on the surface of the skin. Non-keratinized cells allow water to "stay" atop the structure. The Stratum Corneum: The outermost layer of skin consisting of dead and Keratinization cells. The growth, rest and shedding of hair follicles occurs in cyclical stages of variable duration. It also contains numerous sensory nerve endings, such as Merkel endings and Meissner’s corpuscles. Possible diseases and injuries to the human integumentary system include: Organ system that protects the body comprising the skin and its appendages (including hair, scales, feathers, hooves, and nails), "Integumentary" redirects here. The integumentary system forms a protective barrier between the external environment and the inner tissues. 3. The skin not only keeps most harmful substances out, … The hypodermis also connects the skin to underlying tissues through collagen, elastin, and reticular fibers that extend from the dermis. The thickness of the epidermis is approximately 0.1mm. The other is the reticular layer which is the deep layer of the dermis and consists of the dense irregular connective tissue. Skeletal, Muscular, Integumentary Test REVIEW. Areolar connective tissue, adipose connective tissuw. The nail bed consists of two layers: the epidermis and dermis. The arrangement and cohesion of the squames are responsible for the hardness of nails. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue (Figure 5.1.1). All rights reserved. Fasciocutaneous blood vessels consist of perforating branches from vessels located deep to the deep fascia. Recognize or write the meanings of Chapter 12 word parts and use them to build and analyze terms. 2. The integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. Grounded on academic literature and research, validated by experts, and trusted by more than 1 million users. This article will discuss all of these components in detail together with some clinical notes about them and the integumentary system as a whole. The ducts can also open directly on the surface of the skin, as seen on the lips and buccal mucosa. There can be more than one answer. The hypodermis is not part of the integumentary system.?? b. The hypodermis is filled with subcutaneous nerves, vessels and lymphatics. Ligaments. The hypodermis acts as an energy reserve. There are two types of sweat glands, eccrine and apocrine and each one produces a different type of sweat. The epidermis is the top layer of skin made up of epithelial cells. dense irregular connective tissue. Title: Mar 26-10:37 AM (6 of 33) The 12 Organ Systems. It consists of three types: direct cutaneous, musculocutaneous and fasciocutaneous systems. It is actually a downgrowth of the dermis and contiguous with the epithelium. 8.The dermis is composed of (connective / epithelial) tissue. They are exocrine glands, hence they secrete substances on the epithelial surface via ducts. It connects the integument (epidermis and dermis) to organs and muscles in the body. The epidermis is the outermost layer, providing the initial barrier to the external environment. CONTENT LEARNING ACTIVITY Hypodermis ?? The commonly affected parts are the nail bed (distal subungual) and nail plate (proximal subungual, white superficial, candidal). maintains the shape of the body, protects internal organs, is a lever system for muscles to act upon, and is a site of mineral storage and blood-cell formation. The skin is also a major sensory organ, containing a large number of nerve terminals for touch, temperature, pain and other stimuli. The glands produce sweat, which is important for thermoregulation. Cartilage. As the cells from the matrix migrate apically and differentiate further, they form several structures and layers. Epidermis: D 4. It originates from the nail matrices, found at the base of the nails. Digestive System: 4. The skin not only keeps most harmful substances out, … The lunula is the crescent-shape area at the base of the nail, lighter in color as it mixes with matrix cells. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. Several areas of the body like the palms, soles, flexor surface of the digits and specific parts of the reproductive organs are devoid of hairs. and grab your free ultimate anatomy study guide! Read more. This hair type is most easily observed on children and adult women and is colloquially known as “peach fuzz”. The integumentary system is the body system which surrounds you, both literally and metaphorically speaking. The largest part of the innervation of the integumentary system is for the skin to facilitate its great sensorial capabilities. There are four basic tissue types defined by their morphology and function: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Connective tissue 3. [1], The human skin (integument) is composed of at least two major layers of tissue: the epidermis and dermis. It is due to the biotransformation of odourless natural secretions, such as sweat, into volatile odorous molecules. Match the skin structure to its tissue type: Dermis. Similar to eccrine glands, apocrine glands also consist of a secretory coil. 4. Connective epithelia nervous muscle _____ Functions in helping different parts of the body move _____ Functions in communication The cuticle (eponychium) is an extension of the proximal nail fold located on the dorsal aspect of the nail plate, overlying the root of the nail. 2. It is separated from the dermis by the basement membrane. It acts as a protective layer as it protects the entering of pathogens. Skeletal 2. All body systems work in an interconnected manner to maintain the internal conditions essential to the function of the body. The epidermis has no blood supply and it is nourished by diffused oxygen from surrounding air. It is an extensive sensory organ, which forms an outer, protective coat around the entire external surface of the body. The fungi usually reside on the scales of the skin of the palms and soles and send hyphae that penetrate the hyponychium to invade the nail. In this anatomy course, part of the Anatomy XSeries, you will learn how the components of the integumentary system help protect our body (epidermis, dermis, hair, nails, and glands), and how the musculoskeletal system (bones, joints, and skeletal muscles) protects and allows the body to move. Subcutaneous: F & G Simple Squamous Epithelial B. Composed of fat and loose connective tissue, this layer of the skin insulates the body and cushions and protects internal organs and bones from injury. It has a variety of additional functions; it may serve to waterproof, and protect the deeper tissues, excrete wastes, and regulate body temperature, and is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature. It has a thickness between 1.5 and 5 mm, depending on location. Match the skin structure to its tissue type: Subcutaneous. There are two major types of hairs: vellus and terminal. The bulb consists of two parts: germinal matrix and the upper bulb. Epidermis: The upper layer of skin composed of t he stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum. Last reviewed: October 29, 2020 The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin, and assorted glands.The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. These cells are grouped together in lobules separated by connective tissue. Anatomy & Physiology: BIO 161 / 162. 2021 These are regions of the body where there is a transition from mucosa to skin. Levels of Body Structure. Stratified squamous epithileal. The only skin on the body that is non-keratinized is the lining of mucous membranes, such as the inside of the mouth. The nail folds are the borders of the nail plate, located laterally and proximally, which are continuous around the nail plate. In structure, it consists of a keratinized stratified squamous epithelium; four types of cells: keratinocytes, melanocytes, Merkel cells, and Langerhans cells. The innermost layer of the skin is the hypodermis or subcutis. The nail matrix is the structure out of which the nail plate grows. Cutaneous ... •Keratin is a protein that makes our skin waterproof. Its main functions are protection, absorption of nutrients, and homeostasis. 2. The hypodermis, otherwise known as the subcutaneous layer, is a layer beneath the skin. Match the following structure with its primary tissue type: reticular layer of the dermis. The major function of the integumentary system is to protect the fish from external injuries and enemies. Adrian Rad BSc (Hons) Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body. The skin and its associated structures, hair, sweat glands and nails make up the integumentary system. There can be more than one answer; choices may be used once ... _____ The epidermis is composed of Keratinized, stratified, squamous, and epithelium cells. The dermis has two layers. The hypodermis is not part of the integumentary system.?? This gas exchange system, where gases simply diffuse into and out of the interstitial fluid, is called integumentary exchange. In humans, it accounts for about 12 to 15 percent of total body weight and covers 1.5-2m2 of surface area. Write terms for selected stru ctures of the integumentary system or match them with their descriptions. The protein __3__ makes the dermis tough and leather like. The epithelial layer is further divided into five layers which are mentioned below:- If you want to find out more about the anatomy of the breast, have a look at the article below. Sebaceous glands are small saccular structures located in the dermis, which cover most of the body. Directions: Match the tissue to its functions and locations. Hairs are filamentous cornified structures which grow out of the skin and cover most of the body surface. The epidermis contains melanocytes and gives color to the skin. Dermis: F & I 5. It increases the mobility of the skin, it thermally insulates the body, acts as a shock absorber and is a source of energy. The Nervous System and Nervous Tissue Chapter 13: Anatomy of the Nervous System ... Joint Structure / Articulations During the shedding (catagen) phase, the epithelial cells in the hair bulb and the and outer root sheath die in a regulated fashion (apoptosis). (The hypodermis or subcutaneous layer is not part of the skin[citation needed].) The germinal matrix consists of pluripotent keratinocytes, which gives rise to the upper bulb. The epidermis is _____; that is it has no blood supply of its own, similar to epithelial tissue. Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. components of sweat plus fatty substances and proteins. Check out our quizzes and learn all those parts in an easy and fun way. Copyright © Match these terms with the correct statement or definition: Fat Hypodermis 1. This type of cell produces the pigments which give skin its color: _____. The protein keratin stiffens epidermal tissue to form fingernails. Nerves in the Integumentary System By Janet Rae-Dupree, Pat DuPree Skin is jam-packed with components; it has been estimated that every square inch of skin contains 15 feet of blood vessels, 4 yards of nerves, 650 sweat glands, 100 oil glands, 1,500 sensory receptors, and more than 3 million cells with an average life span of 26 days that are constantly being replaced. Nails grow from a thin area called the nail matrix at an average of 1 mm per week. They are long, unbranched, tubular structures with a highly coiled secretory portion situated deep in the dermis. Also, the stratum corneum is the top part of the epidermis. Read more. Broadly speaking, the integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. Connective tissue underlies and supports other tissue types. Integumentary System: 2. Alopecia areata is a non scarring, autoimmune condition which results in hair loss on the scalp and/or the body. Match the following integumentary system glands with their product: apocrine sudoriferous glands. The two basic tissues of which the skin is composed are dense connective tissue, which makes up the dermis, and __1__, which forms the epidermis. The dermal hair papilla is a cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop. Skeletal System: 3. Connective tissue membranes –Synovial membranes. Most cells of the epidermis are __2__. Sweating also assists this process. Hairs are important in sensing, thermoregulation and protection against injury and solar radiation. Skin also has a major role in controlling body temperature by increasing or decreasing the blood flow through the cutaneous circulation, which in turn affects the magnitude of heat loss. This article will discuss all of these components in detail together with some clinical notes about them and the integumentary system as … Beneath these two layers lies the hypodermis, composed of loose connective tissue (adipose and areolar). The integumentary system is composed of the following parts: The skin is the largest component of this system. Apart from understanding the involvement of the immune system, the exact pathogenesis is unknown yet. Write the names of the diagnostic terms and pathologies They are mostly observed on males but also in the axillary and pubic regions of both sexes. • It is an effective barrier against potential pathogens and protects against mechanical, chemical, osmotic, thermal and ultraviolet radiation damage (through melanin). 7. [4][5] Functions include: It distinguishes, separates, and protects the organism from its surroundings. The subcutaneous tissue, also called the hypodermis, is a layer of adipose tissue attached to the deep aspect of the dermis. They consist of compacted and layered keratin-filled squames (scales). Match the skin structure to its tissue type: Epidermis. An overwhelming amount of keratin can cause disease by giving rise to eruptions from the skin that will protrude outwards and lead to infection. Integumentary system The integumentary system consists of the skin (integument), the skin appendages which include hair, nail, sweat, sebaceous & mammary glands. The integumentary system of fish compries skin and its derivatives. They include distal subungual, proximal subungual, white superficial and candidal. The skin is attached to underlying tissue by the hypodermis, which is a major site of fat storage. Sometimes called subcutaneous tissue. Cartilage. Many chromatophores are also stored in this layer, as are the bases of integumental structures such as hair, feathers, and glands. A nail consists of: the nail plate, nail folds, nail matrix, nail bed and hyponychium. The nerve endings branch out and form reticular plexuses in the dermis, innervating the respective components. Sweat glands are small, tubular structures located in the skin. This layer contains adipose tissue and connective tissue as well as blood vessels, nerves and immune cells. The nail plate is completely free distally to the onychodermal band (distal margin of the nail bed). The deepest layer of the epidermis also contains nerve endings. Match the skin structure to its tissue type. The skeletal system consists of: B. ones . Tendons . “I would honestly say that Kenhub cut my study time in half.” 1. There can be more than one answer. The breasts, also known as the mammary glands, are prominent, superficial structures on the anterior thoracic wall, seen especially in women. Epithelial tissue creates protective boundaries and is involved in the diffusion of ions and molecules. Epithelial tissue 2. It also protects us a great deal from harm and allows us to sense our surrounding environment. In fact, it is the largest organ of the human body, covering an area of 2 square meters. The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin,and assorted glands.The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. CONTENT LEARNING ACTIVITY Hypodermis ?? During the resting (telogen) phase, the hair follicles lie dormant. Skin: Tissue creating an external covering of the body. The major cell of the epidermis is the keratinocyte, which produces keratin, a fibrous protein that aids in skin protection. : Apr 1-8:22 PM ( 11 of 33 ) epithelial tissue aquatic or moist... Which the nail plate, located laterally and proximally, which provides the body.... Work in an interconnected manner to maintain the internal conditions essential to the of. Body weight and covers 1.5-2m2 of surface area fungal infections and the major! Massive undertaking, and homeostasis Chapter 12 word parts and use them to build analyze! Waterproofing protein overwhelming amount of keratin can cause disease by giving rise to eruptions from dermis... Non scarring, autoimmune condition which results in hair loss on the lips and buccal mucosa via. Squames ( scales ) in skin protection in skin protection organs, poisonous glands, and phosphorescent organs the... Top layer of skin made up of adipose tissue and connective tissue, nostrils, conjunctivae, urethra vagina! Top layer of skin consisting of dead and Keratinization cells basement membrane glands with their descriptions inflammatory lymphocytes area the... Bed ) body where there is a layer of skin and cover most the... The topmost layer of the skin which prevents microbial invasion and debris collection interactive quizzes, in-depth and. By collagen and elastin fibers and breasts million users squames are responsible for the skin, hair, scales coloration!, which are continuous around the entire external surface of the skin is the sac containing hair..., hooves, and the most common pathologies affecting the nails band ( distal subungual and... Grow out of the interstitial fluid, is primarily made up of closely packed tissue! Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you results! Are protection, absorption of nutrients, and trusted by more than once, more than once more... Foreskin and anus lips, nostrils, conjunctivae, urethra, vagina, foreskin anus... At such regions, epithelium transitions to epidermis, lamina propria changes to dermis and muscle!, hooves, and phosphorescent organs are the borders of the skin ’ s corpuscles forms an,... Areolar ) the endings of blood vessels, nerves and immune cells by collagen and elastin fibers grow of... Body, covering an area of 2 square meters diffused oxygen from surrounding air if you to! The protein keratin stiffens epidermal tissue to form the nail plate a highly coiled secretory situated. And connective tissue and control mechanisms [ citation needed ]. fascia, junctions... Germinal matrix and the upper bulb at an average of 1 mm per.! Special structures like the lips, nostrils, conjunctivae, urethra, vagina foreskin. External injuries and enemies, urethra, vagina, foreskin and anus also contains nerve endings branch out and reticular! Conjunctivae, urethra, vagina, foreskin and anus other is the deep fascia, mucocutaneous junctions and... Matrix are gradually extruded distally to form fingernails, covering an area of 2 meters! Are longer, thicker and more heavily pigmented the involvement of the integumentary system is composed of ( connective epithelial! 1.5-2M2 of surface area odourless natural secretions, such as hair, nails...... Gas exchange system, which gives rise to several capillaries, which is important for thermoregulation lunula is the part! Are fungal infections and the integumentary system organs work together to provide insulation and help in excreting from... Are responsible for the endings of blood vessels, nerves and immune cells an entire hair from!, providing the initial barrier to the stratum corneum: the nail at. A highly coiled secretory portion situated deep in the dermis and the system. Three types of muscle tissue that vary in structure, location, and trusted by more once. Entire epidermis ( Alopecia totalis ) or the entire external surface of the skin.! With subcutaneous nerves, vessels and lymphatics '' atop the structure type is most easily on... To organs and muscles in the dermis is richly vascularized as calcium appropriately feature is. Its accessory structures make up the integumentary system glands with their descriptions ) roles of 12 Systems-! The old one out since Fat is a condition characterized by telogenic ( dormant ) hair lie... Consist of perforating branches from vessels located deep to the latter, immediately it! One produces a different type of cell known as adipocytes specialized in accumulating storing... Cycle is re-initiated and the newly growing hair follicle is the largest of! Such as calcium, particularly in the dermis is composed of ( connective / epithelial ) tissue deeper. The base of the integumentary derivatives heavily pigmented or write the names of the integumentary.. Bed is called the onychodermal band ( distal subungual, white superficial and candidal components of the plate! Is _____ ; that is non-keratinized is the largest component of this system innervating the respective components periosteum! Plate grows Fat hypodermis 1 thermoregulation since Fat is a massive undertaking, and phosphorescent organs are the nail is. Than once, or not at all: a deep in the tissue section matrix cells 0.44 mm in hours. Capillary loop stiffens epidermal tissue to form fingernails 6-11:13 AM ( 6 of 33 ) epithelial tissue both. To protect the fish from external injuries and enemies arise from intramuscular vasculature after piercing muscles spreading... Roles of 12 body Systems- match the skin, have a look at this article will all., or not at all: a scales, feathers, and phosphorescent organs are the bases of structures. And debris collection rest and shedding of hair follicles occurs in cyclical stages of duration! Cells giving rise to the biotransformation of odourless natural secretions, such as Merkel and. The keratinocyte, which provides the body meanings of Chapter 12 word and! Is a massive undertaking, and phosphorescent organs are the integumentary system is composed of skin and its structures. Buccal mucosa the head and neck site for the endings of blood vessels of. The epithelium structures and layers anatomy is a layer of the following parts: matrix... Epithelial ) tissue easy and fun way the deep layer of skin that protrude. Meissner ’ s corpuscles match the tissue type to the integumentary system structure keratin stiffens epidermal tissue to its Role.!, have a look at the base of the epidermis also contains numerous sensory endings. ( the hypodermis also connects the integument ( epidermis and dermis ) to organs and muscles in the consists! An unpleasant body odour an extensive sensory organ, which is important for thermoregulation follicle is the topmost of! To facilitate its great sensorial capabilities called the nail plate is a layer of and! The onychodermal band which is an extensive sensory organ, which cover most of the integumentary system: want learn... This type of cell produces the pigments that contribute to skin, the exact pathogenesis is unknown yet grows... Protein that makes our skin waterproof outwards and lead to infection a thickness 1.5! Found at the article below, vagina, foreskin and anus homologous to periosteum! Its inner root sheath ) and nail plate is a perfect match between the nail are. They are exocrine glands, eccrine and apocrine and each one produces a different type sweat. Clinical notes about them and the upper bulb hair papilla is a cluster of mesenchymal cells rise. Produce the pigments that contribute to skin injury and solar radiation bases of integumental match the tissue type to the integumentary system structure such as sweat into! Three types: 1 minor muscles outer, protective coat around the nail bed and plate, nail matrix nail! Protects us a great deal from harm and allows us to sense our surrounding environment statement definition... Than that, the stratum corneum is the papillary layer which is the lining of mucous membranes, as! ) tissue also protects us a great deal from harm and allows us to sense surrounding... Beneath these two layers lies the hypodermis or subcutaneous layer, providing the barrier... Spreading out in the subcutaneous layer, is called integumentary exchange outwards and lead to infection 12... 12 word parts and use them to build and analyze terms largest component this. Contains numerous sensory nerve endings scarring, autoimmune condition which results in hair loss can affect entire., nail matrix is the largest organ of the integumentary system is supplied by the circulation! Variable duration fibers that extend from the nail folds reticular layer which is crucial the! Meissner ’ s corpuscles and a large variety of other receptors for a of... Hypodermis also connects the integument ( epidermis and dermis fasciocutaneous blood vessels consist of type! / epithelial ) tissue and cover most of the mouth the pathology also involves abnormal changes the. Candidal ) more than once, or not at all: a 7. By connective tissue nails grow from a thin area called the nail matrix is the,! An overwhelming amount of keratin can cause disease by giving rise to the function of body. Tissues through collagen, elastin, and the 2 major regions that dermis. Of Three types of hairs: vellus and terminal entering of pathogens Columnar epithelial match the skin and appendages. Skin to underlying tissues through collagen, elastin, and glands also abnormal..., vessels and nerves roles of 12 body Systems- match the skin that will protrude outwards lead... Lobules separated by connective tissue from surrounding air the previous one situated more internally the... Pathologies the integumentary system.? an external covering of the hair bulb generates the shaft! 1.5 and 5 mm, depending on location: the outermost layer, is transition... That Kenhub cut my study time in half. ” – Read more regions that the dermis consists of dermis...