Colorado Esthetician Written Practice Exam

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In which layer of the skin do cells undergo mitosis to replenish the loss of skin cells?

Stratum Basal

Cells undergo mitosis in the Stratum Basal layer of the skin. The other options are incorrect because

- B: Stratum Spinosum is responsible for adding strength and flexibility to the skin, not for cell regeneration.

- C: Subcutaneous layer mainly consists of fat and connective tissue, and does not experience cell division.

- D: Reticular layer is primarily composed of collagen and elastin fibers, and does not contain actively dividing cells.

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Stratum Spinosum

Subcutaneous layer

Reticular layer

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