Integumentary System Worksheet 1. These layers – the epidermis and the dermis – contain a variety of structures, including blood vessels, hair follicles, and sweat glands. Gross Anatomy of the Integumentary System The skin is made up of two mutually dependent layers that are distinguished based on their structure and location. The integumentary system consists of the skin, hair fingernails and toenails and other structures including glands. Regina Bailey is a board-certified registered nurse, science writer and educator. Integumentary System Worksheet 1. Unlike the other bodily systems throughout the body, the integumentary system is not localized to one area or region of the body; instead, the integumentary system … Basal cells become new keratinocytes, which replace the older ones that die and are shed. It connects the integument (epidermis and dermis) to organs and muscles in the body. protection, regulate body temperature, reception of stimuli, excretion, synthesis of vitamin D, immunological function skin may be one of the most underestimated organs in the body. Skin. The skin is, f… It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature. The integumentary system forms a protective barrier between the external environment and the inner tissues. These include Pacinian corpuscles, Meissner’s corpuscles and a large variety of other receptors for a range of stimuli. Skin may be one of the most underestimated organs in the body. Integumentary System Worksheet 1. The functions of the integument system include: 2. This aids in the development of antigen immunity. Structures of the integumentary systemDermis contains manystructures (organs) Connective tissue Collagen tissue bands Elastic fibers Numerous blood vessels Nerve endings Muscles Hair follicles Oil glands Sweat glands Fat cells3.05 Remember the structures of theintegumentary system 6subcutaneous. Define the integumentary system and name its accessory structures Describe the structure of hair and identify its components, both above and below the skin Summarize the functions of hair Skin, which is the largest organ of the body is the main organ of the integumentary system as well. These cells constantly divide to produce new cells that are pushed upward to the layers above. These layers – the epidermis and the dermis – contain a variety of structures, including blood vessels, hair follicles, and sweat glands. Image Source: Wikipedia. Epidermis contains a few distinct cell types. Hair skin and nails c. Lamellated corpuscles, tactile corpuscles, and blood vessels d. Glands, Hair, and Nails 5. The Integument system will move against mechanical loads such as friction and vibrations that can detect physical changes in the outside environment, with unpleasant and avoidable stimuli from internal organs as vital functions in the body. The hypodermis also connects the skin to underlying tissues through collagen, elastin, and reticular fibers that extend from the dermis. https://www.thoughtco.com/integumentary-system-373580 (accessed January 25, 2021). Other components of the hypodermis include blood vessels, lymph vessels, nerves, hair follicles, and white blood cells known as mast cells. Or as a barrier between the environment and human organs to prevent excessive fluid loss that will enter environments such … Other specialized cells of the dermis help in the detection of sensations and give strength and flexibility to the skin. It contains squamous cells, or keratinocytes, which synthesize a tough protein called keratin. The epidermis rests upon and protects the deeper and thicker dermis layer of the skin. https://oli.cmu.edu/jcourse/workbook/activity/page?context=4348901080020ca601df22a6f50e5f55, CC BY-NC-SA: Attribution-NonCommercial-ShareAlike. This extraordinary organ system protects the internal structures of the body from damage, prevents dehydration, stores fat, and produces vitamins and hormones. The integumentary system is composed of skin, hair, nails, and glands. Structurally, the epidermis is only about a tenth of a millimeter thick but is made of 40 to 50 rows of stacked squamous epithelial cells. Skin may be one of the most underestimated organs in the body. The mammary glandis the functional structure of the female breast and develops initially as an ectodermal skin specialization. Organs of the Integumentary System (structure and functions) The integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. Beneath the dermis lies the hypodermis (subcutis). The integumentary system consists of the skin, hair, nails, glands, and nerves. 1. The hypodermis is the “connection” layer. Various functions of these structures a view the full answer. Integumentary System Function. The dermis also contains nerves. Carotene. 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 bilayered … Skin may be one of the most underestimated organs in the body. A major component of the hypodermis is a type of specialized connective tissue called adipose tissue that stores excess energy as fat. The protection of the body against the external environment. This layer also cushions underlying tissues and protects them from desiccation. Breast growth and appearance in male and female children are virtually identical prior to puberty. The integumentary system is a system comprised of organs that are the outermost protective covering of the animal body, the skin, and its various derivatives. Consider it your marketing team, letting the world know by their … Keratinocytes on the surface of the epidermis are dead and are continually shed and replaced by cells from beneath. The storage of fat helps insulate the body and the burning of fat helps generate heat. Previous question Next question Transcribed Image Text from this Question. Its main function is to act as a barrier to protect the body from the outside world. Skin, nails and hair are the major human integumentary system parts, where the first one is the largest organ not only of the integumentary system but also of all the organs in your body. The epidermis, which contains no blood vessels, is made up of layers of closely packed epithelial cells. Skin AnatomyAnatomy And PhysiologyBiologyMedicineMsArticlesScienceFurMedical Title: Integumentary System Part 1 Fill-in KD15 List six functions your skin performs while it is "just lying there". The integumentary system plays several roles in the body including: 1. An example is it using epithelial tissue as the outer layer of the skin. (2020, August 27). Unit 3: Integumentary System A&P Chapter 5 ! The skin consists of two layers – the dermis and the epidermis. The skin is the largest component of this system. The integumentary system consists of the largest organ in the body: the skin. Beneath these two layers lies the hypodermis, composed of loose connective tissue (adipose and areolar). The skin is by far the largest and most vast organ of the entire body. The integumentary system consists of the largest organ in the body: the skin. Which layer is the thickest? Learn vocabulary, terms, and more with flashcards, games, and other study tools. The Structure of the Integumentary System. The integumentary system consists of the skin, hair fingernails and toenails and other structures including glands. Adipose tissue consists primarily of cells called adipocytes that are capable of storing fat droplets. Together, these two layers form the largest organ in the body, with a surface area of nearly 2 square meters.The epidermis is the outer layer, resting atop the dermis. Retrieved from https://www.thoughtco.com/integumentary-system-373580. 1. There is no direct blood supply to the epidermis and therefore, the cells of this stratified squamous tissue obtain nutrients and oxygen through diffusion. Also found in the basal layer of the skin are touch receptor cells called Merkel cells. Integumentary System The integumentary system contains both living and non- living cells. The integumentary system is composed of the following parts: Skin; Skin appendages. Hairs; Nails; Sweat glands; Sebaceous glands; Subcutaneous tissue and deep fascia; Mucocutaneous junctions; Breasts; Skin. Split End c. Shaft d. Cuticle 6. Which of the following is NOT an accessory structure in the integumentary system? Composed of three layers, the skin protects internal organs and tissues. It has many roles in the body and is the first line of defense against external agents. The accessory structures of the integumentary system include a. Glands, muscles, and nerves b. Protection/ immunity 2. What structures are included in the integumentary system? The epidermis, which contains no blood vessels, is made up of layers of closely packed epithelial cells. Credit: Illustration by Kathryn Born, MA From the outside in, these layers are the following: Stratum corneum (literally the “horny layer”) is about 20 layers […] The skin consists of two distinct layers: a thinner outer layer called the epidermis and a thicker inner layer called the dermis. 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