Cell Division and Mitosis

Question 6 • Anatomy & Physiology A

In the human body, skin cells

Answer

are unable to replace themselves.

are constantly replacing themselves.

replace themselves once each year.

only replace themselves after serious injury.

Explanation

Skin cells are continually shed from the surface and replaced by new cells produced as underlying skin cells divide. This ongoing renewal happens during normal life, not just after a serious injury or only once a year. Therefore, skin cells are constantly replacing themselves.

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Moving Cellular Material

Part 1

Part 2