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Worksheetsautonomic nervous system
Total questions: 7
Worksheet time: 5mins
The parasympathetic innervation controlling the parotid salivary gland arises from the:
facial nerve
oculomotor nerve.
vagus nerve
glossopharyngeal nerve
Which of the following occurs in Horner syndrome:
pupil is dilated.
upper eyelid is retracted
The patient has vasodilation of the facial skin arterioles.
There is excessive facial sweating.
There is exophthalmos.
Which of the following statements best describes the parasympathetic part of the autonomic nervous system?
It is associated with the thoracolumbar part of the spinal cord.
It has long preganglionic axons.
It is active during an emotional crisis.
Its activity mobilizes glucose from glycogen.
The parasympathetic outflow in the spinal cord occurs at levels:
S1-2
S3-S4
S2–4
L1-2
The sympathetic outflow:
arises from nerve cells that are situated in the posterior gray column (horn) of the spinal cord
is restricted to the T1-L2 segments of the spinal cord
has preganglionic nerve fibers that leave the spinal cord in the posterior roots of the spinal nerves
receives descending fibers from supraspinal levels that pass down the spinal cord in the posterior white column
has many preganglionic nerve fibers that synapse in the posterior root ganglia of the spinal nerves
Norepinephrine is secreted at the endings of the:
preganglionic sympathetic fibers
preganglionic parasympathetic fibers
postganglionic parasympathetic fibers
postganglionic sympathetic fibers
Why is the adrenal gland unique in its autonomic innervation?
It is innervated by parasympathetic cholinergic preganglionic neurons.
The postganglionic neurons are cholinergic rather than noradrenergic despite being part of the sympathetic nervous system.
The post-synaptic response is mediated via muscarinic acetylcholine receptors.
It is directly innervated by the spinal cord without passing through ganglia.
