What Is the Purpose of Motor Nerve Varicosities as They

question 18

Multiple Choice

What is the purpose of motor nerve varicosities as they relate to smooth muscle?

• A)They link the thin filaments to the inside of the sarcolemma in smooth muscle.
• B)They reabsorb the decomposition products of acetylcholine after acetylcholinesterase breaks it down.
• C)They enable each cardiac myocyte to directly stimulate its neighbors.
• D)They release neurotransmitter onto smooth muscle cells.
• E)They prevent single-unit smooth muscle cells from pulling apart.

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Definitions:

Fontanel

Soft spots on a baby's skull where the bones haven't yet fused, allowing for growth of the brain and skull.

Occipital

Pertaining to the occipital bone or the back region of the head, near the base of the skull.

Parietal

Referring to the parietal bone of the skull or the parietal lobe of the brain, involved in processing sensory information.

Mastoid

A prominent bony structure located behind the human ear, part of the temporal bone, containing air spaces that communicate with the middle ear.