Lab 9: Midgut, Hindgut and Abdominal Neurovasculature

Question 1

Is ileocecal junction intra

Answer 1

Yesss
Transition so intra, no mesentery tho

Question 2

What organs are retro

Answer 2

2nd half duo
Everything but tail pancrea
Ascending and descending colon
Rectum

Question 3

Describe vasa recta - trick

Answer 3

Point directly,more straight
Look for in jejunum- dead giveaway

Question 4

What is found in ileum

Answer 4

Peyers patches - lower down

Question 5

Describe features of large intestine

Answer 5

Tenia coli = help contract
Haustra = bulges in colon, shapes poop
Epipolic appendages - omental appendices

Question 6

What does sma give

Answer 6

Jejunal and ileal arteries
Ileocolic
Right colic
Middle colicw

Question 7

What does inferior mesenteric give

Answer 7

Left colic
Sigmoidal arteries
Superior rectal

Question 8

Describe marginal artery

Answer 8

Goes up off inf

Question 9

What merges to form portal vein

Answer 9

Inferior mesenteric
Superior mesenteric
Splenic veins

Question 10

Describe innervation generally

Answer 10

Psns and sns
Psns - rest and digest, vagal trunks, so just midgut and above, up to hindgut
Hindgut = splanchnics, sacral nerves, plexuses

Question 11

Name all important things we should see - ans innervation to abd region

Answer 11

Celiac ganglia - neuronal cell bodies
Superior mesenteric ganglion
Inferior mesenteric ganglion
Great and lesser splanchnic nerves
Celiac plexus - forget
Aortic plexus
Superior hypogastric plexus - below stomach
Paravertebral or sympathetic chain/trunk= splanchnic and sympathetic chain

Question 12

Portosystemic anastomosis

Answer 12

Vessels from fetal circulation
If fatty liver disease or too much alc
Blood goes back up and opens vessels around belly button