Autonomic plexuses

Question 1

The autonomic plexuses are primarily concerned with the supply of what structures?

Answer 1

visceral structures in the thoracic and abdominopelvic cavities

Question 2

What 3 fiber types are included in autonomic plexuses?

Answer 2

parasympathetic, sympathetic, and afferents

Question 3

Which fiber type associated with the autonomic plexuses contains the splanchnic nerves?

Answer 3

Sympathetic (preganglionic)

Question 4

Where are the cell bodies of afferent fibers located?

Answer 4

in either spinal ganglia or a peripheral ganglion associated with CN ganglion, namely ganglion

Question 5

What kind of info is conveyed by somatic afferent fibers? visceral afferents?

Answer 5

pain;

stretching of GI structures

Question 6

What is the main (parasympathetic) contribution to the esophageal plexus?

Answer 6

vagus and recurrent laryngeal that synapse on the postganglionic cells in wall of esophagus

Question 7

Where is the sympathetic (preganglionic) contribution from?

Answer 7

the greater splanchnic nerves, arising from the T5-T9 or T10 ganglia

Question 8

What nerves contribute to the thoracic aortic plexus?

Answer 8

vagus, greater splanchnic, and T1-T5 (sym ganglia)

Question 9

What info does the vagus supply to the thoracic aortic plexus?

Answer 9

sensory and visceral afferent

Question 10

What info does the greater splanchnic nerve supply to the thoracic aortic plexus?

Answer 10

sympathetic

Question 11

What info is supplied to the thoracic aortic plexus by the T1-T5 sympathetic ganglia?

Answer 11

vascular

Question 12

What type of fibers are the primary component of the pulmonary plexus?

Answer 12

parasympathetics

Question 13

How do parasympathetics arrive at the pulmonary plexus?

Answer 13

via the anterior and posterior bronchial branches of the vagus nerve

Question 14

Where do preganglionic fibers of the pulmonary plexus synapse?

Answer 14

with postganglionic fibers in the wall of the bronchial vessels

Question 15

Sympathetic fibers of the pulmonary plexus supply the pleura, bronchial glands and musculature. Where do these fibers come from?

Answer 15

T2-T4 ganglia

Question 16

What is supplied by the cardiac plexus?

Answer 16

myocardium, great vessels at the base of the heart and the coronary arteries

Question 17

What branches of the vagus nerve supply parasym info to the cardiac plexus? What influence do they have on the heart rate and coronary arteries?

Answer 17

superior and inferior cardiac nerves;

decreased heart rate and constriction of the coronary arteries

Question 18

Where do sympathetic fibers of the cardiac plexus come from and what influence do they have in the cardiac plexus?

Answer 18

superior, middle, and inferior cardiac nerves and from the T2-T4 sympathetic ganglia;
increased heart rate and dilation of the coronary vessels

Question 19

Which cardiac nerves supply both sympathetic and parasympathetic info?

Answer 19

superior and inferior cardiac nerves supply both; middle cardiac nerve only supplies sympathetic

Question 20

What is the largest prevertebral plexus of the abdominopelvic plexuses?

Answer 20

celiac plexus

Question 21

At what vertebral level does the celiac plexus begin?

Answer 21

L1

Question 22

Which plexus can be described as a dense gangliated plexus that forms around the abdominal aorta and its branches down to/including the common iliac and median sacral arteries?

Answer 22

celiac plexus

Question 23

What are the 3 pairs of well defined ganglia associated with the Celiac plexus?

Answer 23

celiac, superior mesenteric, and aorticorenal ganglia

Question 24

Which vessel are the celiac ganglia near/adjacent to? superior mesenteric ganglia? aorticorenal ganglia?

Answer 24

celiac artery;
superior mesenteric artery;
renal arteries

Question 25

What are the secondary plexuses associated with the celiac plexus named for?

Answer 25

the arteries associated with each plexus i.e. phrenic plexus and inferior phrenic artery

Question 26

What are the 12 secondary plexuses associated with the celiac plexus?

Answer 26

Phrenic, Left gastric, Hepatic, Splenic, Superior mesenteric, Suprarenal, Renal, Gonadal, Abdominal aorta, Inferior mesenteric, Superior hypogastric, and Inferior hypogastric plexues

Please Let Him Sing Slim Shady’s Rap God And I’ll Sing Iggy (it’s long and dumb, but maybe it’ll help) or

GILS IS SHARPS

Question 27

Which secondary plexus is part of the celiac plexus between L4 and S1 vertebral levels and includes the abdominal aortic and inferior mesenteric plexuses?

Answer 27

Superior hypogastric plexus

Question 28

Which secondary plexus includes the celiac plexus below the internal iliac artery?

Answer 28

inferior hypogastric plexus

Question 29

Which secondary plexus is the second largest prevertebral plexus?

Answer 29

inferior hypogastric plexus

Question 30

Which secondary plexus is associated with the vesicle, prostatic (or uterine/vaginal), rectal, and cavernous (erectile) plexuses?

Answer 30

inferior hypogastric plexus

Question 31

T/F: defecation and micturition are initiated by sympathetic input?

Answer 31

false; parasym initiates and sym has opposite effect

Question 32

What type of fibers initiate a stretch refelx in the walls of the bladder or rectum?

Answer 32

visceral afferents sensitive to stretching

Question 33

T/F: Efferent response (regarding defecation/micturition) travels out pelvic splanchnic nerves to detrusor muscle and/or rectal musculature while the external sphincter muscles are relaxed.

Answer 33

True