Abd Cavity/Blood Supply - Blood Supply

Question 1

Where on the aorta is the superior mesenteric trunk located?

Answer 1

arises from behind the neck of the pancreas

Question 2

Terminal branch of the inferior mesenteric a? - what does it supply

Answer 2

superior rectal (passes ant to the left common iliac, supplies sup rectum)

Question 3

Left colic artery supplies

Answer 3

descending colon

Question 4

Sigmoid arteries supply

Answer 4

sigmoid colon

Question 5

The hepatic portal v. carries twice as much blood as the _________ and has higher pressure than the ________.

Answer 5

– twice as much blood as the common hepatic artery

– more pressure than the IVC

Question 5

Path of gastroduodenal a?

Answer 5

– descends behind first part of duodenum
– splits into ~2 bb (superior pancreaticoduodenal a, right gastroepiploic a)

Question 6

Describe the renal arteries

Answer 6

run from abdominal aorta to kidneys

Question 7

Describe the testicular or ovarian arteries

Answer 7

run from abdominal aorta to testicles (through spermatic cord) in males, ovaries in females

Question 8

Describe the lumbar arteries

Answer 8

usually 4 pairs coming off of back of aorta, run lat and backwards on bodies of lumbar vertebrae, supply quadratus lumborum

Question 9

What are the 3 main trunks on the abdominal aorta?

Answer 9

celiac trunk, sup mesenteric, inf mesenteric

Question 10

Where is the celiac trunk located?

Answer 10

arises from abdominal aorta immediately below aortic hiatus of the diaphragm

Question 11

Celiac trunk bb? (3)

Answer 11

left gastric, splenic, common hepatic

Question 12

Path of left gastric a?

Answer 12

– smallest branch of celiac trunk
– runs sup and to the left giving bb to esophagus and liver
– turns back right to anastomose with right gastric a near lesser curvature of stomach

Question 13

Path of splenic a?

Answer 13

– largest branch of celiac trunk
– travels to spleen
– gives off bb that supply pancreas (pancreatic bb), stomach (short gastric), greater omentum and stomach (left gastroepiploic)

Question 14

Path of left gastroepiploic a?

Answer 14

– anastomoses with right gastroepiploic a on greater curvature of stomach
– supplies that area of the stomach and greater omentum

Question 15

Path of common hepatic a?

Answer 15

runs to the right along the upper border of the pancreas and then divides into 3 bb (proper hepatic a, gastroduodenal a, right gastric a)

Question 16

Path of proper hepatic a?

Answer 16

travels sup and to the right near portal vein where it spits into 2 bb (right hepatic a, left hepatic a)

Question 17

Path of right gastric a?

Answer 17

– runs to pylorus of stomach then along lesser curvature to anastomose with left gastric a (of celiac trunk)
– supplies that area of the stomach and lesser omentum

Question 18

Path of superior mesenteric trunk?

Answer 18

– travels anterior to enter the dorsal mesentery behind transverse colon
– gives many bb to supply duodenum, pancreas, small int, large int, (contributes to marginal artery)

Question 19

Where on the aorta is the inferior mesenteric trunk?

Answer 19

arises from ant aorta about 4 cm from bifurcation

Question 20

Inferior mesenteric bb? (3)

Answer 20

left colic, sigmoid, superior rectal, (also contributes to marginal artery)

Question 21

Path of left colic a?

Answer 21

branches into asc and desc bb to supply descending colon

Question 22

Path of sigmoid a?

Answer 22

asc and desc to supply sigmoid colon

Question 23

Definition of portal vein?

Answer 23

going from capillaries to capillaries without going through the heart (allows blood to be filtered of toxins before entering bloodstream)

Question 24

In general, where is the portal vein located?

Answer 24

forms posterior to the pancreas, ascends post to the common bile duct and common hepatic artery

Question 25

The hepatic portal vein is the union of what 3 veins?

Answer 25

sup mesenteric, splenic, inf mesenteric (indirectly, feeds into splenic)

Question 26

True or false; The renal veins dump into the portal system.

Answer 26

FALSE; renal veins dump into the IVC

Question 27

abdominal aorta **unpaired** arteries

Answer 27

1. celiac trunk 2. superior mesenteric 3. inferior mesenteric

Question 28

**paired** arteries off of the descending aorta

Answer 28

1. renal arteries 2. testicular/ovarian arteries 3. lumbar arteries

Question 29

aorta will split into

Answer 29

right & left common iliac arteries at L4

Question 30

common iliac arteries will divide into

Answer 30

1. external iliac artery 2. internal iliac artery

Question 31

arteries of the pelvis gives rise to branches to the

Answer 31

lower extremities and perineum

Question 32

* most variable artery in the body * terminal branch of common iliac artery * blood supply to gluteal, adductor regions, pelvic visceral and perineum * anterior & posterior divisions

Answer 32

internal iliac artery

Question 33

branches of the common hepatic artery

Answer 33

1. proper hepatic artery 2. right gastric artery 3. gastroduodenal artery

Question 34

the inferior mesenteric artery passes to left behind the ____

Answer 34

peritoneum

Question 35

supplies the descending and sigmoid colons, and upper portion through

Answer 35

inferior mesenteric artery