Skin Can Regenerate Effectively Even After Considerable Damage Has Occurred

question 22

Multiple Choice

Skin can regenerate effectively even after considerable damage has occurred because

• A) cells of the stratum germinativum cannot migrate to other positions in the skin.
• B) fibroblasts in the dermis can give rise to new germinal cells in the epidermis.
• C) the epidermis of the skin has a rich supply of small blood vessels.
• D) stem cells persist in both epithelial and connective- tissue components of the skin even after injury.
• E) contraction in the area of the injury brings cells of adjacent strata together.

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Definitions:

Cortical Tissue

Brain tissue found in the cortex that is involved in processing sensory information, thinking, and consciousness.

Pyramids

Structures located in the medulla oblongata of the brain, involved in the transmission of motor signals to the spinal cord.

Renal Columns

Structures in the kidney that consist of lines of blood vessels and urinary tubes and serve as a support for the cortex.

Visceral Layer

The inner layer of a membrane that covers the organs (viscera) within the body cavities, providing a protective barrier and lubrication.