PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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living dermal cells
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dead epidermal cells
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dead dermal cells
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living epidermal cells
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Detailed explanation-1: -Answer and Explanation: The shafts of hair composed of dead dermal cells. This is because hair follicles are generally found in the dermal layer of the skin. As new cells grow on top of dead cells, the hair shaft will continue to grow out of the hair follicle.
Detailed explanation-2: -Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells.
Detailed explanation-3: -Your hair shaft is the part of your hair that can be seen above your scalp. It is made of a protein called keratin, compacted and fused together. Keratin is the same material that nails, hoofs, feathers and claws are composed of. Keratin is a remarkably strong protein, very resistant to wear and tear.
Detailed explanation-4: -It is located in the epidermis and the dermis. The hair shaft is the part of the hair that is above the skin. These cells attach themselves to antigens that invade damaged skin and alert the immune system to their presence.
Detailed explanation-5: -Answer and Explanation: The correct answer is D. epithelial cells. The keratinized epithelial cells are a type of dead cells that make up the hairs.