The Schwann cell, or neurolemmocyte, is a glial cell that wraps around and covers axons in the peripheral nervous system. Schwann cells form and maintain the myelin sheath, and the nodes of Ranvier form the spaces on either side of the Schwann cell.
Occipital lobe. ANS: C. The prefrontal area is responsible for goal-oriented behavior (i.e., ability to concentrate), short-term or recall memory, and the elaboration of thought and inhibition on the limbic (emotional) areas of the CNS.
ANS: A. The sleep pattern of the older adult differs from the younger adult in that total sleep time is decreased, and the older individual takes longer to initiate and maintain sleep. Older adults tend to go to sleep earlier in the evening and awaken more frequently during the night and earlier in the morning.
The trochlear nerve fibers emerge from posterior midbrain and exit from skull to affect control over the proprioceptor and motor fibers for the superior oblique muscle of eye (extraocular muscle). Provides motor and sensory functions to the face, mouth, nose, and eyes. Trigeminal.
The glossopharyngeal nerve affects control over the motor fibers that serve the pharynx (throat) and salivary glands, as well as the sensory fibers that carry impulses from the pharynx, posterior tongue (taste buds), and pressure receptors of the carotid artery. Innervates muscles that move the eye laterally. Abducens.
In general, sympathetic stimulation promotes responses that are concerned with the protection of the individual, which include increasing blood sugar levels, temperature, and blood pressure. The remaining options are not protective measures resulting from initiatives made by the sympathetic nervous system.