Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Biophoto Associates/Science Source
Consider your answer to the previous question. What impact might this have on the life history of keratinocytes?
Multiple Choice
The stratum corneum is the thickest layer of the epidermis because it receives the most oxygen and nutrients.
New keratinocytes produced by stem cells in the stratum corneum migrate downward through the epidermis because they are attracted to a chemical factor released from the dermal blood vessels.
Keratinocytes in the stratum granulosum receive the most nutrients and therefore undergo the fastest mitosis, thus producing the stratum corneum.
Keratonocytes in the stratum spinosum and stratum graulosum are dead because they do not receive enough oxygen and nutrients.
Keratinocytes in the deepest layers of the epidermis (close to the dermis) are the only ones that receive enough nutrients and oxygen to undergo mitosis.
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Transcribed Image Text:Required information Biophoto Associates/Science Source Consider your answer to the previous question. What impact might this have on the life history of keratinocytes? Multiple Choice The stratum corneum is the thickest layer of the epidermis because it receives the most oxygen and nutrients. New keratinocytes produced by stem cells in the stratum corneum migrate downward through the epidermis because they are attracted to a chemical factor released from the dermal blood vessels. Keratinocytes in the stratum granulosum receive the most nutrients and therefore undergo the fastest mitosis, thus producing the stratum corneum. Keratonocytes in the stratum spinosum and stratum graulosum are dead because they do not receive enough oxygen and nutrients. Keratinocytes in the deepest layers of the epidermis (close to the dermis) are the only ones that receive enough nutrients and oxygen to undergo mitosis.
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