STUDENT NAME: STUDENT NUMBER: Multiple Choice Questions 1) Which of the followin
ID: 3507067 • Letter: S
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STUDENT NAME: STUDENT NUMBER: Multiple Choice Questions 1) Which of the following is not a function of the skin? A) protection B) preventing dehydration C) helping regulate temperature synthesizing vitamin C 2) What is true about the blood supply to the skin? A) Both epidermis and dermis are poorly vascularized. B) Both epidermis and dermis are richly vascularized C) Epidermis is avascular and dermis is richly vascularized. D) Epidermis is richly vascularized and dermis is avascular. 3) Skin color is determined by the degree of oxygenation of the blood and the relative a of these two pigments. A) keratin and melanin B) carotene and hemoglobin C) melanin and carotene D) hemoglobin and melanin 4) These are the most abundant epidermal cells. A) dendritic cells B) keratinocytes C) melanocytes D) tactile cells 5) Name the substance that protects the DNA of rapidly dividing skin cells from the caused by ultraviolet rays from the surn. A) carotene B) hemoglobin C) keratin D) melaninExplanation / Answer
skin- skin provide us protection, skin consist of 2 layers epidermis and dermis. the colour of the skin depends on the percentage of melanin pigment. less the melanin fair is the person greater the melanin darker is the person.other 2 function of skin are sensation and regulation.
1. synthesis of vitamin C is not the function of skin
3.haemoglobin and melanin determine the skin colour.
4.keratinocytes, melanocytes, are the most abundant epidermal , cells.
5.melanin protect our dna from rapid division.
6. over exposure to UV radiation result to skin cancer.
8.sebaceous glands secret sebum/ oily like substance.
9.melanoma is the most dangerous skin cancer.
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