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The sloughing off of older cells from the surface of the skin is called

A.

pollination

B.

keratinization

C.

denaturation

D.

germination

E.

desquamation

Answer and Explanation

The Correct Answer is E

A. pollination
This refers to the transfer of pollen in plants; unrelated to skin physiology.

B. keratinization
Keratinization is the process by which skin cells produce keratin and move upward in the epidermis, but it does not refer to shedding.

C. denaturation
Denaturation refers to the alteration of protein structure due to heat, pH, or chemicals-doesn’t apply to normal skin turnover.

D. germination
Germination refers to seed sprouting in plants, not skin cell behavior.

E. desquamation
Desquamation is the shedding of dead, keratinized cells from the outermost layer of the skin (stratum corneum).


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Related Questions

Correct Answer is C

Explanation

A. sweat glands releasing fluid
Sweat helps with cooling through evaporation, not facial flushing.

B. constriction of the blood vessels in the dermis of my skin
Vasoconstriction reduces blood flow to the skin and is a response to cold, not exercise.

C. dilation of the blood vessels in the dermis of my skin
Vasodilation increases blood flow to the skin surface, releasing excess heat and resulting in a flushed appearance after physical exertion.

D. sebaceous glands releasing their product
Sebaceous glands produce oil (sebum) for waterproofing the skin and are unrelated to thermoregulation.

E. dilation of the blood vessels in the epidermis of my skin
The epidermis is avascular (has no blood vessels). Dilation occurs in the dermis.

Correct Answer is C

Explanation

A. neutrophils and macrophages are summoned to the area
This is an early step in the inflammatory phase to remove pathogens and debris.

B. blood fills the wound and a clot is formed
This occurs immediately after injury to stop bleeding and initiate repair.

C. granulation tissue is converted into connective tissue
This is part of the remodeling phase-the final stage-where the new tissue is matured and replaced with stronger connective tissue.

D. fibroblasts move in from surrounding connective tissue
This occurs during the proliferative phase, earlier than the final remodeling phase.

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