GA - Mihaila - 2/13 - Vasculature of the Abdomen Flashcards Preview

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Flashcards in GA - Mihaila - 2/13 - Vasculature of the Abdomen Deck (14)
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1
Q

Which quadrant contains the cecum?

A

RLQ

2
Q

Which quadrant contains the appendix?

A

RLQ

3
Q

Which quadrant contains the spleen?

A

LUQ

4
Q

Which quadrant contains the abdominal esophagus?

A

LUQ (middle-ish)

5
Q

Ligation of the splenic artery probably will result in:

A

Devascularization of the spleen

The splenic (aka lienal) artery comes off the celiac artery and feeds the spleen from the top. The celiac trunk comes off the abdominal aorta.

6
Q

Where does the anastomosis between the right and left gastric artery occur?

A

The left gastric artery is usually the smallest branch off the celiac trunk, and anastomoses with the right gastric artery along the lesser curvature of the stomach.

7
Q

Explain the blood supply to the pancreas.

A

*Neck, Body & Tail: pancreatic arteries (branch of splenic artery, which is a branch of celiac trunk)

  • Head:
  • superior pancreatico-duodenal a. (branch of gastro- duodenal, which is a branch of common hepatic, which is a branch of celiac trunk)
  • inferior pancreatico-duodenal a. (branch of SMA)
8
Q

The stomach can be divided into three regions of arterial supply. The cardiac region receives most of its blood from the __1__ artery, the fundus region receives most of its blood from the __2__ artery, while the pyloric region receives most of its blood supply from the __3__ artery.

A
  1. left gastric/esophageal
  2. short gastric
  3. gastro- duodenal
9
Q

The ___ segment of the abdominal aorta is the most common site for aneurism.

A

infrarenal

10
Q

Describe the structure and function of the arcades and vasa recti.

A

The arcades (anastomotic loops between arteries):

  • decrease resistance and increase velocity of blood flow
  • decrease pulsations of blood, which results in constant blood flow

Vasa Recti (straight vessels arising from arcades):

  • supply alternate sides of the intestine
  • provide continuous blood supply to regions of intestine that are involved in digestion
11
Q

List the anastomoses of the SMA.

A
  • inferior pancreatico-duodenal artery (SMA)
  • superior pancreatico-duodenal artery (celiac trunk)
  • middle colic:
    right branch – ascending branch right colic
    left branch – ascending branch left colic a. (IMA)
  • right colic:
    ascending branch – right branch middle colic
    descending branch – superior branch ileocolic a.
  • ileocolic:
    superior branch – descending branch of right colic
12
Q

Ligation of the right colic artery may be compensated for by blood supplied by:

A

the middle colic and ileocolic arteries, due to the anastamoses of the SMA.

13
Q
The following symptoms are associated with what condition?
Currant jelly stool
Abdominal pain
Poor appetite
No history of abdominal trauma
A

Intussusception - the prolapse or invagination of one portion of the intestine

14
Q

Psoas sign and obdurator sign, when positive, are indicators for what condition?

A

Appendicitis