The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin,and assorted glands. Integumentary structures and functions anatomy and. Our skin would be our companion throughout our lives, would stick with us through thick or thin, and would be at our defense once it feels that we are compromised. In the adult human body, the skin makes up about 16 percent of body weight and covers an area of 1. The skin is a key indicator of an individuals health status. Functional morphology of the integumentary system in fishes 481 figure 5 histological section of the skin of a juvenile chinook salmon, oncorhynchu s tshawytscha, showing the epidermis and upper.
The integumentary system comprises the skin and its appendages acting to protect the body. Chapter 6 diseases and conditions of the integumentary system chapter outline orderly functioning of the integumentary system dermatitis seborrheic dermatitis contact dermatitis atopic dermatitis eczema urticaria psoriasis rosacea acne vulgaris herpes zoster shingles impetigo furuncles and carbuncles cellulitis. The integumentary system has multiple roles in homeostasis, including protection, temperature regulation, sensory reception, biochemical synthesis, and absorption. This anatomy quiz on the skin structure of the integumentary system is developed to test your knowledge on the layers, appendages, and nerve endings in the skin. The skin is an organtogether with its accessory organs, it constitutes the integumentary system. Introduction the organs of the integumentary system include the skin and its accessory structures including hair, nails, and glands, as well as blood vessels, muscles and nerves dermatology is the medical specialty for the diagnosis and treatment of disorders of the integumentary system. How the integumentary system lives through a lifespan. Chapter 5 integumentary system functions of the integumentary system i. Sweat is 99% water, but when mixed with the bacteria on the skin, giving off a strong smell sebaceous glands secrete sebum oil which lubricates skin can block pores and produce 3. The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. Accessory structures integumentary accessory structures hair, hair follicles, sebaceous glands, sweat glands, and nails. Petite protection rhinos regulation of body temperature cant cutaneous sensation mimic metabolic function big blood reservoir elephants excretion protection the i. Our skin is our first barrier against infectious diseases and. In fact, the skin and accessory structures are the largest organ system in.
All mammalian hard keratin, as well as the soft keratin of the stratum corneum, is of the alpha type. Start studying anatomy and physiology chapter 3 membranes and integumentary system. Skin forms the bodys outer covering and protects the body from chemicals, disease, uv light and physical damage. Your body systems all work together to maintain relatively stable. Describe the primary functions of the integumentary system. Functions of the skin skin is a barrier to microbes, chemical irritants, water loss. The integumentary system, consisting of the skin, hair, nails, sebaceous oil, and sweat glands, has a protective and regulatory function and, indirectly, an aesthetic one as well. Even there are certain conditions that can claim the life of the victim, for example, skin cancer.
The skin is the largest organ in the body, weighing 69 pounds and. The integumentary system is formed by the skin and its derivative structures see figure 11. The importance of each of these cells, along with the structure, function, and key molecules present in the skin, are discussed in depth and explained in an article on the integumentary system. Comparative and functional study of integumentary system of two. Human anatomy and physiology 11 edition by martinithe integumentary system. The integumentary system is composed of the skin, hair and nails. Support your body systems for better health integumentary. It is the largest organ system in the body, consisting of around 15% of the total body weight.
The integumentary system the integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin, and assorted glands. The skin is made up of two mutually dependent layers that are distinguished based on their structure and location. Identify the integumentary system structures by labeling and anatomical illustrations. They also possess many other horny derivatives of the epidermis, including nails, claws, hooves, quills, and horns. The integumentary system forms a protective barrier between the external environment and the inner tissues. Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body. Sebum or oil from the sebaceous glands is slightly acidic, retarding bacterial colonization on the skin surface. The integumentary system is susceptible to a variety of diseases, disorders, and injuries. These layers the epidermis and the dermis contain a variety of structures, including blood vessels, hair follicles, and sweat glands.
Over one thousand different disorders can affect the skin. Any medical condition associated with the skin, hair or nails can be rightly considered the integumentary system disorder, which may be either mild or involve significant amount of severity and complexity. Anatomy and physiology workbook for dummies, 2nd edition. Discover the functions of the system, and the different layers of the skin. It makes up 1215% of body and has an entire surface area between 12 meters. Smooth, healthy, and vibrant skin, hair, and nails are appreciated, sought after, and rewarded in our society. The skin not only keeps most harmful substances out, but also prevents the loss of fluids. We might have taken for granted the little things that are constant in our lives.
Integumentary system illnesses and disorders unlike some other body systems, the integumentary system quickly shows when it is struck by an injury or disorder. Choose from 500 different sets of integumentary system chapter 4 flashcards on quizlet. The skin, which averages in total size to about 20 square feet, performs several important functions. Sweat from the sudoriferous glands is slightly hypertonic and can flush off most bacteria on the skin surface. Skin may be one of the most underestimated organs in the body. Keeping water out of the body is an important role for your integumentary system, as is shown by figure 1. The integumentary system, consisting of the skin and its derivatives, is the largest and one of the most complex systems of the body. What vitamin is synthesized when the skin is exposed to sunlight. Functions the defence of the body against invaders involves two systems, the integumentary system and the immune system.
The integumentary system is made up of the skin, hair, nails, sweat glands, and the sebaceous glands. Welcome to science at mount pleasant community high school. These range from annoying but relatively benign bacterial or fungal infections that are categorized as disorders, to skin cancer and severe burns, which can be fatal. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Integumentary system central bucks school district. Integumentary system notes springfield public schools. Choose your answers to the questions and click next to see the next set of questions.
Functions of the integumentary system glands sudoriferousglands sweat glands why does sweat smell bad. Integumentary system an overview sciencedirect topics. Describe common disease related to the integumentary system. The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin, and assorted glands. The integumentary system chapter 6 skin functions skin layers skin color hair nails cutaneous glands burns. Learn integumentary system chapter 4 with free interactive flashcards.
The integumentary system refers to the skin and its accessory structures, and it is responsible for much more than simply lending to your outward appearance. Functions of the integumentary system protection against injury and infection regulates body temperature sensory perception regulates water loss chemical synthesis. The integumentary system consists of the skin, hair, nails and exocrine glands. The integumentary system introduction organs of the integumentary system include skin accessory structures hair. List six functions your skin performs while it is just lying there. This skin is an amazing organ that is designed to protect the human body from. Human anatomy and physiology 11 edition by martinithe. The most common skin disorders are those caused by allergies or bacterial or fungal infections. Integumentary system n skin and accessory organs n hair, nails, glands, muscles, nerves n dermatology n medical specialty the deals w skin disorders n anatomy. What structures are included in the integumentary system.
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