MEDICAL
GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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epidermis
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cutis
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dermis
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hypodermis
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Detailed explanation-1: -The epidermis contains no blood vessels, and cells in the deepest layers are nourished by diffusion from blood capillaries present in the upper layers of the dermis.
Detailed explanation-2: -The Epidermis. The epidermis is composed of keratinized, stratified squamous epithelium. It is made of four or five layers of epithelial cells, depending on its location in the body. It does not have any blood vessels within it (i.e., it is avascular).
Detailed explanation-3: -Remember that there are no blood vessels in the epidermis so the cells get their nutrients by diffusion from the connective tissue below, therefore the cells of this outermost layer are dead. Stratum Corneum cells flake off.
Detailed explanation-4: -The only living cells in the body that aren’t directly served by blood vessels are those of the cornea in the eye.