HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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true
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false
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Either A or B
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None of the above
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Detailed explanation-1: -The correct answer is (A). The epidermis is avascular (meaning it does not contain blood vessels), however, the underlying dermis is highly vascular. The cells of the epidermis therefore rely on the dermis for nourishment.
Detailed explanation-2: -NARRATOR: The epidermis consists of living and nonliving layers. The cells immediately in contact with the dermis, close to the nourishing blood supply, are alive. These cells divide, new ones pushing older ones away from the dermis.
Detailed explanation-3: -Skin is the largest organ in the body and covers the body’s entire external surface. It is made up of three layers, the epidermis, dermis, and the hypodermis, all three of which vary significantly in their anatomy and function.