Structure of the skin layers of skin types of skin types of skin cells integumentary system duration. Learn structure of skin functions with free interactive flashcards. The adjective cutaneous means of the skin from latin cutis, skin. The squamous layer is composed of a variety of cells that differ in shape, structure, and subcellular properties depending on their location. Organ system that covers the body, the skin being the main organ within the system. The ability of an organ or tissue to perform its special work. Webmd s skin anatomy page provides a detailed image of the skin and its parts as well as a medical definition. Full text full text is available as a scanned copy of the original print version. Read this article to learn about the surface area, function and structure of skin. The deeper layer of skin is well vascularized has numerous blood vessels. In mammals, the skin is an organ of the integumentary system made up of.
Healthy, problem free skin is even in colour, smooth in texture, well hydrated and appropriately sensitive to touch, pressure and temperature. Structure and function of skin printable worksheet. Skin also stores fat and water, and plays a role in immunity from disease. The skin structure can be broadly categorized into the. It is a waterproof, airtight and flexible barrier between the environment and internal organs. Understanding the structure and function of the skin. The skin is mainly mesodermal in its embryonic derivation. The structure and function of skin, third edition is devoted to all matters pertaining to the structure and function of the skin. It explains the different functions of the skin and outlines its. When skins structure is disturbed, its protective function and healthy appearance are compromised. It is not technically part of the skin but helps attach the skin to underlying bone and muscle. The structural architecture of skin and the important molecules that maintain this structure are also included in this course section. Choose from 500 different sets of structure of skin functions flashcards on quizlet. It is also the largest organ of the human body, providing around 10% of the body mass of.
Structure human skin cells stock photos download 84. Joint structure and function 5th edition pdf structure and. Skin care questions common skin complaints, treatments, hair removal techniques and more. Through clinical and basic science research, many structural, compositional, and mechanical changes to the skin have been described as a function of age over the last century. Enter your mobile number or email address below and well send you a link to download the free kindle app. Skin is the soft outer tissue covering of vertebrates with three main functions. Download 84 structure human skin cells stock photos for free or amazingly low rates. The outermost level, the epidermis, consists of a specific constellation of cells known as keratinocytes, which function to synthesize. Despite the fact that we look at our skin every day, we tend not to be all that aware of its exact internal structure. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue figure 1. It protects us from ultraviolet radiation, from variations in temperature, pathogens, and other toxins.
For instance, the eyelid and eyebrow are located in close proximity, but the skin of the eyelid is soft, thin, and has fine hairs in contrast to the eyebrow, which displays thick skin and coarse hairs. The total skin surface of an adult ranges from 1220 square feet. View skin problems such as sun burn, skin cancer and acne. Buy this article and get unlimited access and a printable pdf.
Renewal of the skin barrier through the unique process of exfoliation is described. By printig out this quiz and taking it with pen and paper creates for a. Skin performs many beneficial functions but it does undergo changes and damage. Draw a label diagram of the skin and describe its structures and key parts see diagram attached the skin is the largest organ in the human body. Skin structurefunction relationships and the wound healing. Supra basal spinous cells, for example, are polyhedral in shape and have a rounded nucleus, whereas cells of the upper. This chapter discusses the structure, histology, and function of the skin.
Drawing upon the accumulated data derived from embryology, histology, anatomy, physiology, biochemistry, and pharmacology, this book presents an overview of skin, with emphasis on human skin. Joint structure and function 5th edition pdf for free. Learn about the skins function and conditions that may affect the skin. Beneath the surface of the skin are nerves, nerve endings, glands, hair follicles, and blood vessels. Protein found in the dead outer layer of skin and skin and in nails and hair. The epidermis, or outer layer, has four or five distinct. Structure and functions of the skin clinical dermatology. Then you can start reading kindle books on your smartphone, tablet, or computer no kindle device required. The structure and function of skin jama jama network. Nonhairy glabrousa skin type on the palms and soles, it has thicker epidermis and lacks hair follicles. It keeps the internal environment of our body stable.
Anatomy and physiology of the skin 3 or stratum spinosum murphy, 1997. Structure of the skin the skin holds the contents of the body together. The skin consists of three main layers epidermis, dermis and subcutaneous tissue. There are some physiological and structural differences between black and white skin. Basic histological structure and functions of facial skin. Subcutaneous tissue also provides skin with nerves and blood supply. Oct 29, 2014 structure of the skin layers of skin types of skin types of skin cells integumentary system duration. It introduces their basic structural subunits and points out major steps in the biosynthesis and supramolecular processing of fibrillar collagens as prototypical members of this protein. Skin structurefunction relationships and the wound. Chapter 15 function and structure of the skin flashcards.
Skin aging is a combination of biochemical, mechanical, and environmental changes. Specialized skin cells and structures are formed from 36 months of gestation. These processes include barrier and immunologic functions, melanin production, vitamin d synthesis, sensation, temperature regulation, protection from trauma and aesthetics. Structure of the skin what is the function of the skin. This skin is an amazing organ that is designed to protect the human body from many outside elements, one being harmful uv rays. They originate from cells in the deepest layer of the epidermis called the basal layer. Skin alters its color, thickness, and texture in different parts of the body according to specific functional needs.
Skin functions, structure and relationship with the body. Course one describes the structure and function of the skin barrier, including its role in the bodys immune processes. Most of the cells in the epidermis are keratinocytes. In terms of chemical composition the skin is about 70% water, 25% protein and 2% lipids. Overview of the skin as an organ skin is the largest organ of the body 15% of body weight. Descriptions of skin marks, growths, and color changes.
In direct contact with the outside environment, the skin helps to maintain four. The skin is the largest organ in the body, comprising about 15% of body weight. This article, the first in a twopart series on the skin, looks at its structure and function. The skin protects us from microbes and the elements, helps regulate body temperature, and permits the sensations of touch, heat, and cold. Surface area, function and structure general anatomy. It loses moisture and elasticity and can look and feel dry, rough, cracked andor saggy. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. The integumentary system is formed by the skin and its derivative structures see figure 11. This book is the first to concentrate on the structure and function of black skin. Structure and function of skin biology for majors ii. This worksheet is in pdf format and holds a printable version of the quiz structure and function of skin. Pemphigus vulgaris is a rare, severe autoimmune disorder in which blisters of varying sizes break out on the skin and mucous membranes.
The epidermis is the relatively thin, tough, outer layer of the skin. It is continuous at the mucocutaneous junctions with the mucosa of the alimentary, repiratory and genitourinary tracts. The skin is an organ that provides the outer protective wrapping for all the body parts. The skin is the site of many complex and dynamic processes as demonstrated in figure 11 and table 11. It consists of two layers, the epidermis and the dermis, which work closely together. Structure and function of the skin skin disorders msd. In addition, skin color, texture, and folds see descriptions of skin marks, growths, and color changes help mark people as individuals. Function of skin skin is much more than an outer covering. The formation of the barrier layer and its maintenance and renewal is the function of epidermal keratinocytes, although other cell types interacting with keratinocytes also play a significant role.
You can use the questions in this assessment to go over some facts about the. The skin or cutis covers the entire external surface of the body, including the external acoustic meatus and tympanic membrane. Ageing and illness take their toll, while wounds, burns and skin diseases, including cancer, can damage this organ. Other animal coverings, such as the arthropod exoskeleton, have different developmental origin, structure and chemical composition. Layers of skin the skin is composed of three layers. Epidermis and dermis hair, nails and skin glands are modified epidermal structures hypodermis is fatty connective tissue under the skin. Anything that interferes with skin function or causes changes in appearance see effects of aging on the skin can have major consequences for. Mar 06, 2014 a video of a presentation about the skin and its function that i use for revision of anatomy and physiology in my nursing degree. A hallmark biologic feature in people with skin of color is the amount and epidermal distribution of the cutaneous pigment, melanin. It is a protective covering for the skeletal system and vital organs. Get a printable copy pdf file of the complete article 116k, or click on a page image below to browse page by page. By printig out this quiz and taking it with pen and paper creates for a good variation to only playing it online. May 11, 2020 the skin is the largest organ and covers the external surface of the human body. Skin thickness varies 16 mm depending on location and use.