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chapter 17 part 1 review question

Terms in this set (12)

send axons to synapse on peripherally located ganglionic neurons
visceral motor neurons in the CNS

a. are ganglionic neurons
b. are in the dorsal root ganglion
c. have unmyelinated axons except in the lower thoracic region
d. send axons to synapse on peripherally located ganglionic neurons
include preganglionic fibers that go to collateral ganglia
splanchnic nerves
a. are formed by parasympathetic postganglionic fibers
b. include preganglionic fibers that go to collateral ganglia
c. control sympathetic function of structures in the head
d. connect one chain ganglion with another
sympathetic chain ganglia
which of the following ganglia belong to the sympathetic division of the ANS?
a. otic ganglion
b. sphenopalatine ganglion
c. sympathetic chain ganglia
d. all of the above
thoracic and lumbar spinal segments
preganglionic fibers of the ANS sympathetic division originate in the
a. cerebral cortex of the brain
b. medulla oblongata
c. brainstem and sacral spinal cord
d. thoracic and lumbar spinal segments
release epinephrine and norepinephrine into blood capillaries
the large cells in the adrenal medulla, which resemble neurons in sympathetic ganglia

a. are located in the adrenal cortex
b. release acetylcholine into blood capillaries
c. release epinephrine and norepinephrine into blood capillaries
d. have no endocrine function
short in length and myelinated
sympathetic preganglionic fibers are characterized as being

a. short in length and unmyelinated
b. short in length and myelinated
c. long in length and myelinated
d. long in length and unmyelinated
acetylcholine; excitatory
all preganglionic autonomic fibers release ______ at their axon terminals, and the effects are always _____.

a. norepinephrine; inhibitory
b. norepinephrine; excitatory
c. acetylcholine; excitatory
d. acetylcholine; inhibitory
unmyelinated
postganglionic fibers of autonomic neurons are usually
a. myelinated
b. unmyelinated
c. larger than preganglionic fibers
d. located in the spinal cord
carries the preganglionic fibers into a nearby sympathetic chain ganglion
the white ramus communicans
a. carries the postganglionic fibers to the effector organs
b. arises from the dorsal root of the spinal nerves
c. has fibers that do not diverge
d. carries the preganglionic fibers into a nearby sympathetic chain ganglion
a and b
cutting the ventral root of the spinal nerve at L2 would interrupt the transmission of what type of information?

a. voluntary motor output
b. ANS motor output
c. sensory input
d. a and b
There are no enzymes to break down epinephrine and norepinephrine in the blood and very little in peripheral tissues.
the effects of epinephrine and norepinephrine released by the adrenal glands last longer than those of either chemical when relaesed at neuroeffector junctions. why?
sympathetic chain ganglia are innervates by preganglionic fibers from the thoracolumbar regions of the spinal cord, and they are interconnected by preganglionic fibers and axons from each ganglion in the chain inner sting a particular body segment. the collateral ganglia are part of the abdominal autonomic plexus anterior to the vertebral column. preganglionic sympathetic fivers innervate the collateral ganglia as splanchnic nerves. intramural ganglia are part of the parasympathetic division. they are located near or within the tissues of the visceral organs.
how do sympathetic chain ganglia differ from both collateral ganglia and intramural ganglia?
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