the autonomic plexuses

Question 1

what is the autonomic plexus concerned with primarily?

Answer 1

supply of the visceral structures in the thoracic and abdominopelvic cavities.

Question 2

what are the three fiber types and their branches?

Answer 2

1. parasympathetic pre and post ganglionic
2. sympathetic pre and post ganglionic
3. afferents, visceral and somatic

Question 3

what are the thoracic autonomic plexuses?

Answer 3

1. esophogeal
2. thoracic aortic
3. pulmonary
4. cardiac

Question 4

what is the main contribution to the esophogeal plexus? where does it synapse?

Answer 4

the main contribution is from the vagus and reccurent laryngeal and they synapse on postganglionic cells in the walls of the esophagus.

Question 5

what is the sympathetic contribution to the esophogeal plexus?

Answer 5

the greater splanchnic nerves

Question 6

what is the main contribution to the thoracic aortic plexus? what is each of the contributors functions?

Answer 6

1. vagus nerve- sensory and visceral afferent
2. greater splanchnic nerve- sympathetic
3. T1-T5- vascular

Question 7

what is the primary component of the pulmonary plexus?

Answer 7

parasympathetics

Question 8

how do the the parasympathetics arrive at the pulmonary plexus?

Answer 8

via the anterior and posterior bronchial branches of the vagus nerve.

Question 9

where do the preganglionic fibers synapse?

Answer 9

in the wall of the bronchial vessels.

Question 10

parasympathetic stimulation of the pulmonary plexus results in?

Answer 10

i no se senor!!!!!!!!!!!!

Question 11

what ganglia contribute sympathetic fibers to the pulmonary plexus?

Answer 11

T2-T4 ganglia

Question 12

what do the sympathetic fibers of the pulmonary plexus supply?

Answer 12

the pleura, bronchial glands, and musculature.

Question 13

what does the cardiac plexus supply?

Answer 13

the myocardium, the great vessels at the base of the heart

Question 14

how does parasympathetic information arrive at the cardiac plexus? what does stimulation result in?

Answer 14

via the superior and inferior cardiac nerve and the vagus nerve. they decrease heart rate and constrict coronary arteries.

Question 15

how do sympathetic fibers arrive in the cardiac plexus? and what do they do?

Answer 15

from the superior, middle, and inferior cardiac nerve and from the T2-T4 sympathetic ganglia. they increase heart rate and dilate the coronary vessels.

Question 16

what is the main plexus of the abdominopelvic plexus?

Answer 16

celiac plexus.

Question 17

what is the largest paravertebral plexus?

Answer 17

celiac plexus

Question 18

at what level does the paravertebral plexus begin?

Answer 18

begins about level L1.

Question 19

what structure does the celiac plexus form a network around?

Answer 19

abdominal aorta and its branches down to and includding the common iliac and median sacral arteries.

Question 20

what are the three pairs of well defined ganglia associated with the celiac plexus? where are these located?

Answer 20

1. celiac ganglia- adjacent to celiac artery
2. superior mesenteric ganglia- associated with the superior mesenteric artery
3. aorticorenal ganlia- near the renal arteries