Blood Vessels and Nerves of Abdominal GI

Question 0

Veins from every part of GI drain into portal vein except for?

Answer 0

in rectum and anal canal

Question 1

What are the three areas of the intestines that are more vulnerable to ischemia due to being poorly developed with the marginal artery of Drummond?

Answer 1

• middle portion of ascending colon
• Griffith’s point-transition between midgut and hindgut
• Sudek’s point-rectosigmoid junction

Question 2

What forms to portal vein?

Answer 2

joining of splenic v. and superior mesenteric v.

Question 3

What are the four major groups of lymph nodes?

Answer 3

• celiac
• superior mesenteric
• inferior mesenteric
• para-aortic

Question 4

Where do the lymph nodes drain to?

Answer 4

intestinal and right and left lumbar trunks which all drain into cisterna chyli

Question 5

What is Troiser’s sign?

Answer 5

hard, enlarged supraclavicular lymph node, considered sign of metastatic abdomen malignancy

Question 6

What is Sister Mary Joseph’s sign?

Answer 6

palpable lymph node in umbilical region, indicates metastasis of malignant cancer in region

Question 7

What are the sympathetic nerves in the region?

Answer 7

preganglionic fibers from T5-L2, end on ganglia
postganlionic fibers end on enteric ganglia
inhibit secretion, peristalsis, cause sphincter contraction and cause vasoconstriction

Question 8

What are the parasympathetic nerves in the region?

Answer 8

Preganglionic fibers of vagus from brainstem
Pelvic splanchnic nerves-end on enteric ganglion
Activate secretion, peristalsis, sphincter relaxation and cause vasodilation