Hair follicles are found in the layer of skin called the (A) epidermis. (B) derm
ID: 303390 • Letter: H
Question
Hair follicles are found in the layer of skin called the (A) epidermis. (B) dermis. (C) subcutaneous layer. (D) exodermis. What substance is in the outer layer of epithelial cells that helps protect and waterproof the layers of skin cells beneath it? (A) keratin (B) melanin (C) calcium (D) fatty tissue Which vitamin is produced by the skin in response to ultraviolet light? (A) vitamin A (B) vitamin B (C) vitamin C (D) vitamin D 3. Which of the following is NOT a function of the skin? (A) regulation of body temperature (B) protection of the body (C) production of red blood cells (D) perception of the body's surroundings 4.Explanation / Answer
1. (B) dermis
Dermis contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands.
2. (A) keratin
Keratin is the protein that protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents (water proof)
3. (D) vitamin D
4. (C) production of red blood cells
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