Autonomic NS

Question 1

What does the autonomic NS innervate?

Answer 1

1. Internal organ systems
2. Smooth muscles
3. Glandular tissues

Question 2

What are the two divisions of the ANS?

Answer 2

1. sympathetic

2. parasympathetic

Question 3

Sympathetic fibers arise from the ________ horn of the SC.

Answer 3

lateral

Question 4

What spinal level do the sympathetic fibers arise from?

Answer 4

T1-L2

Question 5

What are the two possible courses of action of the sympathetic fibers?

Answer 5

1. Synapse at the para-vertebral ganglia and distribute to the thorax, head, neck and limbs
2. Bypass the para-vertebral ganglia, form the splanchnic nerves, synapse in pre-vertebral ganglia i the abdomen and supply the abdomen and pelvis

Question 6

The parasympathetic fibers arise either from nuclei in the ________ of from the _____ ______ of the spinal cord.

Answer 6

brainstem; lateral horn

Question 7

What spinal levels do the parasympathetic fibers arise from?

Answer 7

S2-S4

Question 8

What cranial nerves distribute parasympathetic fibers?

Answer 8

CN III, VII, IX, X

Question 9

Where do the parasympathetic fibers arising from cranial nerves supply?

Answer 9

head and neck, thorax and abdominal viscera down to left 1/3 of transverse colon

Question 10

Where do the parasympathetic fibers originating from the SC supply?

Answer 10

remaining abdominal viscera and all pelvic viscera

Question 11

The parasympathetic fibers all synapse at the ________ ganglion prior to supplying target organ.

Answer 11

visceral

Question 12

Parasympathetic fibers may supply limbs (T/F).

Answer 12

FALSE