PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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fat is lost from the subcutaneous layer and the dermis shrinks
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epidermal calls undergo a burst of cell division
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the number of sweat glands diminishes
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collagen degrades in the subcutaneous layer as the epidermis shrinks
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Detailed explanation-1: -As you get older, your skin naturally becomes less elastic and more fragile. Decreased production of natural oils dries your skin and makes it appear more wrinkled. Fat in the deeper layers of your skin diminishes. This causes loose, saggy skin and more-pronounced lines and crevices.
Detailed explanation-2: -After the age of 20, one percent less of collagen is produced in the dermis each year (2). The collagen and elastin fibers become thicker, more clumped, and looser, resulting in inelastic and brittle skin and eventually in wrinkling and sagging (3).
Detailed explanation-3: -With age, there is a loss of subcutaneous fat and the skin becomes thinner and less resistant to trauma. The reduced volume of subcutaneous fat means the role of the hypodermis in limiting conductive heat loss is impaired.
Detailed explanation-4: -The subcutaneous fat layer thins so it has less insulation and padding.