INTEGUMENTARY SYSTEM 1. Name 3 organs of the integumentary system 2. Name the 2
ID: 281456 • Letter: I
Question
INTEGUMENTARY SYSTEM 1. Name 3 organs of the integumentary system 2. Name the 2 tissue types that form the skin. 3. What is a melanocyte? 4. What is a keratinocyte? 5. What is the function of the melanocytes? 6. Name the 2 parts of the skin. 7. Mention 3 functions of the skin. 8. What is the function of the sebaceous glands 9. What is the function of the sweat glands? 10. What is the function of the dermis? 11. What is the tissue composition of the dermis? 12. What is the function of the epidermis? f the enidermis?Explanation / Answer
1) Skin, epidermis and hair are the three organs of the integumentary system.
2) Epithelial tissue and connective tissue are the two tissue types that form the skin.
3) Melanocytes are melanin-producing neural crest-derived cells that are located in the bottom layer (the stratum basale) of the skin's epidermis, the middle layer of the eye (the uvea), the inner ear, vaginal epithelium, meninges, bones, and heart.
4) Keratinocyte is an epidermal cell which produces keratin. This is the predominant cell type in the epidermis, the outermost layer of the skin, constituting 90% of the cells found there.
5) Melanocytes have a role in skin pigmentation, and they have the ability to produce and distribute melanin.
6) The epidermis and the dermis are the two parts of the skin.
7) Three functions of the skin: A) regulates body temperature; B) prevents loss of essential body fluids, and penetration of toxic substances; C) protection of the body from harmful effects and radiation of the sun.
8) Sebaceous glands secrete the oily, waxy substance called as sebum. Sebum is responsible to waterproof and lubricate the skin and hair of mammals.
9) Sweat glands regulate the body temperature. Sweat cools the surface of the skin and reduces body temperature. These glands provide a significant excretory route for water and electrolytes.
10) Dermis gives the skin its flexibility and strength. The dermis contains nerve endings, sweat glands and sebaceous glands, hair follicles, and blood vessels.
11) The dermis is composed of a papillary layer and a reticular layer. The reticular layer of the dermis is made up of dense irregular connective tissue.
12) The epidermis provides a waterproof barrier and creates our skin tone.
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