Complete the Following Questions by Identifying the Labeled Structures Related

question 63

Short Answer

Complete the following questions by identifying the labeled structures related to the muscles of facial expression.
The structure labeled B is the _________________________.

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Definitions:

Precentral Gyrus

A prominent gyrus on the surface of the brain's frontal lobe, important for voluntary motor activity.

Conus Medullaris

The tapered, lower end of the spinal cord which terminates in the lumbar region of the spine.

Cauda Equina

A bundle of spinal nerves and spinal nerve rootlets which appear as a "horse's tail" at the base of the vertebral column.

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brainstem to the lumbar region, serving as the main pathway for information connecting the brain and peripheral nervous system.