Topic Set 4: Keratinocyte Life Cycle & EGF

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Last updated 12:35 AM on 9/20/26
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6 Terms

1
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Where are unipotent stem cells located in the epidermis?

Stratum basale

2
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How often do epidermal stem cells divide?

About every 19 days

3
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What are the fates of the two daughter cells from stratum basale division?

1 cell stays and continues mitosis, the other moves upward and sloughs off

4
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What happens to keratin content as cells move toward the surface?

It increases

5
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What is the function of Epidermal Growth Factor (EGF)?

Promotes epidermal growth and keratinization

6
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What are 4 specific actions of EGF?

Increases keratin, hair/nail growth, gland secretion, and cell division for repair