unit 7: sympathetics, autonomic plexuses

Question 1

the autonomic plexuses are primarily concerned w/ supply of visceral structures in the __ and __ cavities

Answer 1

thoracic

abdominopelvic

Question 2

within the autonomic plexus there are pre and post ganglionic ___ and ___, as well as somatic and visceral ____ fiber types

Answer 2

parasympathetics
sympathetics
afferent

Question 3

four thoracic plexuses

Answer 3

esophageal
thoracic aortic
pulmonary
cardiac

Question 4

main contribution to the esophageal plexus is from the vagus and __ __ that synapse on POSTganglionic cells in the wall of esophagus

Answer 4

recurrent laryngeal

Question 5

sympathetic contrib to the esophageal plexus is from the greater splanchnic nerves, arising from the - or _ ganglia

Answer 5

T5-T9 or T10

Question 6

the ___ nerve has sensory and visceral afferent input to the thoracic aortic plexus

Answer 6

vagus

Question 7

• the __ __ nerve lends preganglionic sympathetic input to the thoracic aortic plexus
• __-__ sympathetic ganglia lend postganglionic vascular input

Answer 7

greater splanchnic

T1-T5

Question 8

___ are the primary component of the pulmonary plexus, and arrive there via the anterior and posterior ___ branches of the VAGUS nerve
-those preganglionic fibers synapse w/ postganglionic fibers synapse w/ postganglionic in the wall of __ __

Answer 8

parasympathetics
bronchial
bronchial vessels

Question 9

PARA stim of pulmonary plexus results in __ and increased activity of ___ ___

Answer 9

bronchoconstriction

bronchial glands

Question 10

sympathetic fibers for the pulmonary plexus are from the - ganglia, and supply the pleura, bronchial glands and musculature

Answer 10

T2-T4

Question 11

the cardiac plexus supplies the ___, the great vessels at the __ of the heart, and the coronary arteries

Answer 11

myocardium

base

Question 12

PARA info arrives to the cardiac plexus via the sup and inf cardiac nerve off the vagus, and their influence causes ___ HR and ___ of coronary arteries

Answer 12

decreased

constriction

Question 13

sympatetic arrive from sup, middle, inf cardiac nerves and from T2-4 symp ganglia to result in __ HR and ___ of coronary vessels

Answer 13

increased

dilation

Question 14

largest prevertebral plexus, which begins at L1 vertebra level

Answer 14

celiac

Question 15

celiac plexus is dense and gangliated that forms a network around the __ __ and its branches down to and including the common iliac and median sacral arteries

Answer 15

abdominal aorta

Question 16

three pairs of well defined ganglia associated w/ celiac plexus
-each is assoc w/ a similarly named artery

Answer 16

celiac ganglia
superior mesenteric ganglia
aorticorenal ganglia

Question 17

a ___ plexus is associated with the celiac plexus and are named for the arteries associated w/ each one (see notes i-xii)

Answer 17

secondary

Question 18

the __ __ plexus is part of the celiac plexus bt L4-S1 levels, and includes the abdominal aortic and inferior mesenteric plexuses

Answer 18

superior hypogastric

Question 19

__ __ plexus includes celiac plexus BELOW the internal iliac artery
-is SECOND largest prevertebral plexus

Answer 19

inferior hypogastric

Question 20

the inferior hypogastric plexus is associated with these 4 secondary plexuses

Answer 20

vesicle (bladder)
prostatic or uterine/vaginal
rectal
cavernous

Question 21

defecation and micturition are initiated by ___ input

Answer 21

parasympathetic

Question 22

__ ___ are sensitive to wall stretching of bladder or rectum (stretch reflex)

Answer 22

visceral afferents

Question 23

in defecation/micturition, EFFERENT response travels out of __ __ nerves to detrusor muscle and/or rectal musculature

• external sphnicter muscles are relaxed
• sympathetic stim has opp effect

Answer 23

pelvic splanchnic