Skin can regenerate effectively even after considerable damage has occurred because
A) the epidermis of the skin has a rich supply of small blood vessels.
B) stem cells persist in the skin even after injury.
C) fibroblasts in the dermis can give rise to new germinal cells in the epidermis.
D) contraction in the area of the injury brings cells of adjacent strata together.
E) cells of the stratum basale cannot migrate to other positions in the skin.

Question

Quizplus · Accepted Answer

Stem cells persist in the skin even after injury and can differentiate into the various cells that make up the epidermis and dermis, allowing for effective regeneration of damaged skin. The other options are incorrect as small blood vessels in the epidermis do not directly contribute to regeneration, fibroblasts in the dermis do not give rise to new germinal cells, contraction does not bring cells together in a way that specifically aids regeneration, and cells of the stratum basale can migrate to other positions in the skin.

Skin Can Regenerate Effectively Even After Considerable Damage Has Occurred