1.4.1 GI Vasculature, Lymphatics, and ANS

Question 1

What vertebral level is the celiac trunk at?

Answer 1

T12/L1

Question 2

Name the unpaired (3) and paired arteries (6) that come off the abdominal aorta (from top to bottom)

Answer 2

Question 3

What vertebral level is the SMA at?

Answer 3

L1

Question 4

What do each of these colored dots represent?

Answer 4

Question 5

At what vertebral level, does the celiac trunk branch off?

Answer 5

T12/L1

Question 6

What are the three branches of the hepatic proper?

Answer 6

Right gastric artery, L/R hepatic artery

Question 7

What two veins join together to form the hepatic portal vein?

Answer 7

SMV and splenic vein

Question 8

What is the artery that runs all along the large intestine?

Answer 8

The marginal artery of drummond

Question 9

When the common hepatic artery bifurcates at the pylorus, what does it give rise to?

Answer 9

Hepatic proper artery (ascending)

Gastroduodenal artery (descending)

Question 10

What vertebral level are the renal artery/vein at?

Answer 10

L1/L2

Question 11

The left gastric will send some blood cranially to what organ?

Answer 11

Esophagus

Question 12

What is one of the key anatomic characterics of the splenic artery that help identify it?

Answer 12

Highly coiled

Question 13

What are the three branches of the IMA?

Answer 13

Left Colic

Sigmoid (3-4 branches)

Superior Rectal

Question 14

What are some of the anastomoses b/t Celiac artery and SMA?

Answer 14

Question 15

What is the variation (uncommon) in anastomotic connection b/t the SMA and IMA?

Answer 15

Arc of Riolan

Question 16

What are some of the branches of the splenic artery?

Answer 16

Pancreatic branches

Short gastric arteries (fundus)

Left gastro-omental (greater curvature of stomach)

Question 17

What are the four ways that the portal system can interact with the caval system in instances of portal HTN?

Answer 17

Esophageal plexus

Paraumblicial plexus

Rectal plexus

Retroperitoneal plexus

Question 18

What is variable about the formation of the portal vein?

Answer 18

IMV

Question 19

Name the three major branches of the celiac trunk

Answer 19

Left gastric, splenic, common hepatic

Question 20

What is unique about the hepatic portal venous system?

Answer 20

NO VALVES! (blood rich in nutrients, especially after a meal)

Question 21

Describe the preganglionic and postganglionic length in the sympathetic and parasympathetic system

Answer 21

Question 22

What is the main function of visceral efferent fibers? visceral afferent fibers?

Answer 22

visceral efferent fibers: motor

visceral afferent fibers: sensory

Question 23

Name this condition

Answer 23

Portal HTN leading to “Caput Medusae”

Question 24

What vertebral level does the aorta bifurcate at?

Answer 24

L4

Question 25

Foregut organs has lymph that typically drains where? Midgut? Hindgut?

Answer 25

Forgut: Celiac Midgut: SMA Hindgut: IMA

Question 26

What vertebral level is the IMA at?

Answer 26

L3

Question 27

Where does the superior mesenteric artery (MSA) branch off the abdominal aorta?

Answer 27

L1

Question 28

Identify the splanchnic nerves and their ganglions/organs.

Answer 28

Question 29

What level does the aorta cross the diaphragm?

Answer 29

T12

Question 30

Both the celiac artery and SMA run behind what organ and split which organ?

Answer 30

Behind: duodenal bulb Split: pancreas

Question 31

What are the three main branches of the SMA? (What do they supply with blood?)

Answer 31

Middle colic (transverse colon) Right colic (ascending colong) Ileocolic (ileocolic junction structures)

Question 32

The celiac trunk provides blood to what type of organs?

Answer 32

Foregut organs

Question 33

The IMA supplies blood to what type of organs?

Answer 33

Hindgut organs

Question 34

Portal HTN will have what effect on the esophageal plexus?

Answer 34

Lower esophageal venous varices (abnormally dialated veins)

Question 35

The four colored lines are pointing at which structures anterior to the abdominal aorta?

Answer 35

Question 36

The SMA descends anterior to these three structures

Answer 36

L renal vein, 3rd part duodenum, uncinate process of pancreas

Question 37

What type of organs receive blood from the SMA?

Answer 37

Midgut organs

Question 38

What occurs around the abdominal aorta at these levels: T12, T12/L1, L1/L2, L1, L3, L4

Answer 38

T12: diaphragm T12/L1: Celiac trunk L1/L2: Renal A and V L1: SMA L3: IMA L4: Aortic bifurcation