03c: Autonomics of TAP

Question 1

Organs within abdomen and pelvis receive preganglionic motor and sensory parasympathetic innervation from which nerve(s)?

Answer 1

Vagus or pelvic splanchnic

Question 2

(X) nerve contributes parasympathetic innervation to most viscera - up until which organ?

Answer 2

X = vagus

Until 2/3 of way through transverse colon

Question 3

The greater splanchnic nerve arises from (X) at which SC levels?

Answer 3

X = sympathetic chain

T5-T9

Question 4

The lesser splanchnic nerve arises from (X) at which SC levels?

Answer 4

X = sympathetic chain

T10-T11

Question 5

The least splanchnic nerve arises from (X) at which SC levels?

Answer 5

X = sympathetic chain

T12

Question 6

The lumber splanchnic nerves arise from (X) at which SC levels?

Answer 6

X = lumbar ganglia of sympathetic chain

T11-L2

Question 7

The sacral splanchnic nerves arise from (X) at which SC levels?

Answer 7

X = sympathetic chain in front of sacrum

T12-L2

Question 8

“Paravertebral ganglia” refers to (X), the fibers of which are general (somatic/visceral) (afferent/efferent).

Answer 8

X = sympathetic chain ganglia, lateral along vertebral column

General visceral efferent (sympathetic)

Question 9

“Prevertebral ganglia” refers to (X), the fibers of which are general (somatic/visceral) (afferent/efferent).

Answer 9

X = collateral ganglia, near major abdominal arteries

General visceral efferent (sympathetic)

Question 10

Adrenal medulla functions as (sympathetic/parasympathetic) ganglia, but the difference is:

Answer 10

Sympathetic;

NT released into blood (no post-ganglionic fibers); system-wide sympathetic effect

Question 11

Sympathetic preganglionic cell bodies located in:

Answer 11

Intermediate horn of SC

Question 12

Sympathetic preganglion sends axons out through (X) root, then trunk, then (Y) to synapse on prevertebral cells in (Z).

Answer 12

X = ventral
Y = white ramus
Z = abdomen (near aorta and its branches)