autonomics of the thorax

Question 1

sympathetic presynaptic body

Answer 1

in IMLCC of T1-L2 spinal cord, short axons

Question 2

sympathetic postsynaptic body

Answer 2

in paravertebral ganglion (sympathetic trunk), very long axons

Question 3

parasympathetic presynaptic body

Answer 3

in brainstem nuclei, long axons

Question 4

parasympathetic postsynaptic body

Answer 4

in wall of target organ, short axons

Question 5

pulmonary plexus

Answer 5

innervates bronchial tree, lungs, and pulmonary vessels

Question 6

regions of the pulmonary plexus

Answer 6

anterior and posterior to the tracheal bifurcation

Question 7

pulmonary plexus contains

Answer 7

postsynaptic sympathetic fibers, presynaptic parasympathetic fibers, and visceral afferents

Question 8

postsynaptic sympathetic fibers of the pulmonary plexus

Answer 8

thoracic pulmonary nerves from T2-5/6

Question 9

presynaptic parasympathetic fibers of the pulmonary plexus

Answer 9

pulmonic branches of CN X

Question 10

cardiac plexus

Answer 10

innervates nodes, myocardium, and coronary arteries

Question 11

cardiac plexus superficial region

Answer 11

between pulmonary trunk and aortic arch

Question 12

cardiac plexus deep region

Answer 12

between aortic arch and tracheal bifurcation, contains the coronary and atrial plexus

Question 13

cardiac plexus contains

Answer 13

presynaptic and postsynaptic sympathetics, presynaptic parasympathetics, and visceral afferents

Question 14

postsynaptic sympathetics fibers of the cardiac plexus

Answer 14

cardiopulmonary splanchnic nerves

Question 15

presynaptic parasympathetic fibers of the cardiac plexus

Answer 15

cervical and thoracic cardiac branches of CN X

Question 16

terminal cardiac ganglion lie

Answer 16

beneath epicardium, or subpericardially

Question 17

sympathetic innervation to thoracic viscera

Answer 17

Question 18

parasympathetic innervation to thoracic viscera

Answer 18

Question 19

sympathetic effects on heart

Answer 19

SA node increases rate, AV node increases conduction, atrial and ventricular muscles increase contractility force, coronary arteries vasodilate

Question 20

parasympathetic effects on heart

Answer 20

SA node decreases rate, AV node decreases conduction, atrial muscles decrease contractility force, coronary arteries vasoconstrict

Question 21

sympathetic effects on the lungs

Answer 21

bronchial muscles bronchiodilate, glands of bronchial tree decrease secretion, pulmonary vessels vasoconstrict

Question 22

parasympathetic effects on the lungs

Answer 22

bronchial muscles bronchioconstrict, glands of bronchial tree increase secretion, pulmonary vessels vasodilate