Abdominal Vessels + Nerves (Exam 2)

Question 1

Blood supply to descending part duodenum

Answer 1

cranial pancreaticoduodenal A

Question 2

What separates descending from ascending duodenum?

Answer 2

caudal duodenal flexure

Question 3

Blood supply of ascending vs. descending duodenum

Answer 3

ascending: caudal pancreaticoduodenal A
descending: cranial pancreaticoduodenal A

Question 4

Jejunum is supplied by Jejunal Aa, all branches of _______.

Answer 4

cranial mesenteric A

Question 5

(Ox/Horse) has long Jejunal Aa branches that come off as a group while the (ox/horse) has short branches that come off long cranial mesenteric A.

Answer 5

horse
ox

Question 6

Horse: ileum empties –> ____.
Ox: Ileum empties at junction of ____ & ___.

Answer 6

cecum
cecum + ascending colon

Question 7

2 peritoneal folds of the ileum (equine)

Answer 7

mesoileum
ileocecal fold

Question 8

Blood supply to ileum (horse)

Answer 8

mesenteric ileal branch of ileocolic A

Question 9

Blood supply to ileum (cow)

Answer 9

mesenteric ileal branch (of ileocolic A)
antimesenteric ileal branch

Question 10

Cecum blood supply (horse vs. cow)

Answer 10

horse: lateral + medial cecal A
cow: only cecal A

Question 11

In the horse, the lateral cecal A runs in ______ while the medial cecal A runs in ______.

Answer 11

cecocolic fold
medial band (taenia ceci)

Question 12

“Small colon” is another name for ____ of the horse

Answer 12

descending colon

Question 13

Viscera are innervated by _____.

Answer 13

ANS

Question 14

3 parts of the innervation of abdominal viscera

Answer 14

1. sympathetic part
2. parasympathetic part
3. visceral sensory (not part of ANS but runs with them)

Question 15

Between the CNS and cell innervated of abdominal viscera, there are ____ neurons. List them & their cell body location.

Answer 15

2
preganglionic neuron: CNS
postganglionic neuron: ganglion

Question 16

PSNS innervation + SNS innervation of abdominal viscera

Answer 16

PSNS: Vagus N
SNS: Splanchnic Nn

Question 17

Vagus N has ____ branches which go to the ______ & ____ plexuses.

Answer 17

celiac
celiacomesenteric + aortic

Question 18

2 branches of splanchnic Nn and the plexus they go to

Answer 18

Thoracic splanchnic Nn –> celiacomesenteric plexus

Lumbar splanchnic Nn –> aortic plexus

Question 19

SNS innervation of pelvic viscera and the plexus they go to

Answer 19

hypogastric Nn –> pelvic plexus

Question 20

Hypogastric Nn are off the ______ ganglion with _____ axons.

Answer 20

caudal mesenteric
postganglionic

Question 21

PSNS innervation of pelvic viscera + plexus

Answer 21

Pelvic Nn –> pelvic plexus

Question 22

Pelvic Nn (PSNS) –> pelvic plexus w/ _____ axons.

Answer 22

preganglionic