Created by Terri Street for OKTechMasters © 2000 Adapted by Tom Gest, Anatomical Sciences, University of Michigan Medical School, 2004 Questions developed by Charisa Roy, University of Michigan Medical School Class of 2007

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A.gray ramus communicans C. ventral primary ramus B. spinal nerve D. white ramus communicans Which of the following is NOT a part of the pathway for presynaptic sympathetic fibers?

A.gray ramus communicans C. ventral primary ramus Which of the following is NOT a part of the pathway for presynaptic sympathetic fibers?

Back to Board Presynaptic sympathetic fibers travel in ventral rootlets to spinal nerves, through the first few mm. of the ventral ramus before leaving in a white ramus communicans.

A. peristalsis C. coronary vessel dilation B. bronchodilation D. increased heart rate Which of the following actions would NOT result from stimulation of the thoracic visceral nerves and the cervical cardiac nerves?

A. peristalsisB. bronchodilation Which of the following actions would NOT result from stimulation of the thoracic visceral nerves and the cervical cardiac nerves?

Back to Board Peristalsis of the gut results from parasympathetic innervation.

A. thoracic splanchnics C. sacral splanchnics B. lumbar splanchnics D. pelvic splanchnics Which splanchnic nerves contain predominantly postsynaptic sympathetic fibers?

C. sacral splanchnics B. lumbar splanchnics Which splanchnic nerves contain predominantly postsynaptic sympathetic fibers?

Back to Board Sacral splanchnic nerves are primarily postganglionic. Most fibers synapse within the sympathetic trunk before leaving.

A. cervical C. aorticorenal B. celiac D. superior mesenteric Which of the following ganglia is NOT a prevertebral ganglia?

A. cervical C. aorticorenal Which of the following ganglia is NOT a prevertebral ganglia?

Back to Board The three prevertebral ganglia are the celiac, superior mesenteric, and aorticorenal. Cervical, thoracic, lumbar, sacral and ganglion impar are the paravertebral ganglia.

A. capsule C. suprarenal medulla B. suprarenal cortex D. Kupffer cells Sympathetic stimulation of the suprarenal gland causes the release of epinephrine and norepinephrine from what location?

C. suprarenal medulla B. suprarenal cortex Sympathetic stimulation of the suprarenal gland causes the release of epinephrine and norepinephrine from what location?

Back to Board Preganglionic sympathetic fibers synapse on cells of the suprarenal medulla, causing them to secrete epinephrine and a little norepinephrine directly into the circulation.

A.white rami communicantes C. thoracic spinal nerves B. gray rami communicantes D. cervical spinal nerves Which of the following is the most numerous within the body?

A.white rami communicantes B. gray rami communicantes Which of the following is the most numerous within the body?

Back to Board There are 31 pairs of spinal nerves, and every spinal nerve receives a gray ramus communicans. White rami only exist between T1 and L2, so there are only 14 pairs.

A.found in CN III, VII, IX, X C. innervates limbs & body wall B. found in S2 - S4 D. innervates pelvic viscera What is NOT true about parasympathetic fibers?

C. innervates limbs & body wall D. innervates pelvic viscera What is NOT true about parasympathetic fibers?

Back to Board Preganglionic parasympathetic fibers are found in CN III, VII, IX, & X, and spinal nerves S2-4. They innervate viscera of the head, neck, and body cavities, but not the limbs or body wall.

A. autonomic nerve plexus C. wall of target organ B. sympathetic trunk D. splanchnic nerves Where do parasympathetic fibers usually synapse?

C. wall of target organ B. sympathetic trunk Where do parasympathetic fibers usually synapse?

Back to Board Preganglionic parasympathetic fibers below the head synapse in the wall of the innervated organ. They never enter any part of the sympathetic trunk, much less synapse there.

A. ciliary C. submandibular B. otic D. celiac Which of the following is NOT a parasympathetic ganglion?

C. submandibular D. celiac Which of the following is NOT a parasympathetic ganglion?

Back to Board The 4 named parasympathetic ganglia are found in the head. They are the ciliary, otic, pterygopalatine, & submandibular.

A. urination C. defecation B. sweating D. peristalsis Sympathetic stimulation inhibits all of the following EXCEPT which?

A. urinationB. sweating Sympathetic stimulation inhibits all of the following EXCEPT which?

Back to Board Sympathetic innervation inhibits peristalsis, urination, defecation, and most glandular secretion, except for sweat glands.

A. visceral pain C. visceral reflexes B. unconscious sensation D. body temperature The afferent fibers that accompany some sympathetic fibers carry what type of information?

A. visceral painB. unconscious sensation The afferent fibers that accompany some sympathetic fibers carry what type of information?

Back to Board The sympathetic afferents carry visceral pain, and are responsible for the phenomenon called referred pain.

A. sympathetic chain C. gray rami communicantes B. splanchnic nerves D. white rami communicantes In which of the following locations are presynaptic sympathetic fibers NOT likely to be found?

C. gray rami communicantes D. white rami communicantes In which of the following locations are presynaptic sympathetic fibers NOT likely to be found?

Back to Board If you don’t know this by now, you’ve been sleeping. Gray rami carry postganglionic sympathetic fibers.

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