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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. cardiac C. pulmonary B. esophageal D. aortic What autonomic plexus is located under the aortic arch and on the tracheal bifurcation?
A. cardiac D. aortic What autonomic plexus is located under the aortic arch and on the tracheal bifurcation?
Back to Board The cardiac plexus is located beneath the aortic arch and anterior to the tracheal bifurcation.
A. target organ C. sympathetic chain ganglia B. pulmonary plexus D. white rami communicantes Where do the thoracic visceral nerves (from T1-T4) synapse?
C. sympathetic chain ganglia B. pulmonary plexus Where do the thoracic visceral nerves (from T1-T4) synapse?
Back to Board Thoracic visceral nerves are postsynaptic. They synapse within the sympathetic chain ganglia at T1-4 levels before traveling to the cardiac, pulmonary, and esophageal plexi.
A. vasoconstriction C. bronchodilation B. bronchoconstriction D. none of the above Parasympathetic stimulation of the lung causes what effect(s)?
A. vasoconstrictionB. bronchoconstriction Parasympathetic stimulation of the lung causes what effect(s)?
Back to Board The lungs develop from the foregut, so parasympathetic innervation to the lungs works similar to that of the gut, producing bronchoconstriction and vasodilatation.
A. sympathetic C. sympathetic & parasympathetic B. parasympathetic D. none of the above For patients suffering with asthma, the prescribed medication mimics what type of response?
A. sympatheticB. parasympathetic For patients suffering with asthma, the prescribed medication mimics what type of response?
Back to Board Parasympathetics bronchoconstrict, and sympathetics inhibit parasympathetic action, relaxing the smooth muscle of the bronchial tree to produce bronchodilatation.
A. right atrium C. aortic arch B. left atrium D. S/A node The cardiac plexus lies inferior to which heart structure?
C. aortic arch B. left atrium The cardiac plexus lies inferior to which heart structure?
Back to Board The cardiac plexus lies beneath the aortic arch and on the tracheal bifurcation.
A. superior cervical C. lumbar B. middle cervical D. thoracic Which ganglia is NOT a possible synapse site for sympathetic fibers that innervate the heart?
C. lumbar D. thoracic Which ganglia is NOT a possible synapse site for sympathetic fibers that innervate the heart?
Back to Board Sympathetic fibers that reach the heart come from synapses within cervical and upper thoracic chain ganglia, but not lumbar or sacral.
A. cardiac nerves C. sympathetic trunk B. phrenic nerves D. CN X Decreased heart rate and contractility is caused by innervation from the fibers of what nerve?
A. cardiac nerves D. CN X Decreased heart rate and contractility is caused by innervation from the fibers of what nerve?
Back to Board Cervical cardiac nerves come from cervical sympathetic chain ganglia and from the vagus (CN X), but the best answer is CN X, or vagus nerve.
A. peristalsis C. mucus secretion B. vasoconstriction D. vasodilation Which of the following is an effect of sympathetic stimulation upon the esophagus?
C. mucus secretion B. vasoconstriction Which of the following is an effect of sympathetic stimulation upon the esophagus?
Back to Board Sympathetics constrict blood vessels of the gut. Parasympathetics do the heavy lifting, producing peristalsis, mucus secretion, and vasodilation.
A. cervical C. pulmonary B. cardiac D. esophageal The vagus nerves become the anterior and posterior vagal trunks after forming which plexus of nerves?
C. pulmonary D. esophageal The vagus nerves become the anterior and posterior vagal trunks after forming which plexus of nerves?
Back to Board Vagus nerves form the esophageal plexus, then just before passing through the esophageal hiatus of the diaphragm, they form the anterior and posterior vagal trunks.
A. peristalsis C. bronchodilation B. vasoconstriction D. increase heart rate Which of the following is an action caused by parasympathetic stimulation?
A. peristalsis C. bronchodilation Which of the following is an action caused by parasympathetic stimulation?
Back to Board Sympathetics are famous for vasoconstriction, and they also bronchodilate and increase heart rate. Parasympathetics cause peristalsis and mucus and other gland secretion.
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Created by Terri Street for OKTechMasters © 2000 Adapted by Tom Gest, Anatomical Sciences, University of Michigan Medical School, 2004 Questions developed.
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