Lecture 3 (Feb 26)

Question 1

What is the arterial supply to the cecum?

Answer 1

Ileocolic artery

Question 2

What is the arterial supply of the appendix?

Answer 2

Appendicular artery

Question 3

The ileoceolic artery is a branch of which artery?

Answer 3

Terminal branch of SMA

Question 4

The appendicular artery is a branch of which artery?

Answer 4

Branch of the ileocolic artery

Question 5

Describe the venous drainage of the cecum and appendix.

Answer 5

• Cecum = Ileocolic vein

- Appendix = Ileocolic vein

Question 6

What is the sympathetic supply of the cecum including spinal levels, splanchnic nerve and plexus?

Answer 6

Originate in the lower thoracic part of the spinal cord (T10-T12)

Question 7

What is the parasympathetic supply of the cecum?

Answer 7

Derive from the vagus nerves

Question 8

What is the arterial supply of the colon?

Answer 8

Ileocolic and right colic arteries

Question 9

The ileocolic and right colic arteries are branches of which artery?

Answer 9

SMA

Question 10

What is the blood supply of the transverse colon?

Answer 10

• Middle colic artery

- Various degrees í left and right colic arteries via anastomoses

Question 11

The middle colic artery is a branch of which artery?

Answer 11

SMA

Question 12

What is the venous drainage of the transverse colon?

Answer 12

SMV

Question 13

What is the arterial supply of the descending and sigmoid colons?

Answer 13

Both = Left colic and sigmoid arteries

Question 14

The left colic and sigmoid arteries are branches of which artery?

Answer 14

IMA

Question 15

What is the venous drainage of the descending and sigmoid colons?

Answer 15

Both = IMV to the splenic vein then hepatic portal vein enroute to the liver

Question 16

What are the parts of the large intestine?

Answer 16

• Appendix
• Cecum
• Colon (ascending, transverse, descending, and sigmoid)
• Rectum
• Anal Canal

Question 17

What are the features of the large intestine?

Answer 17

• Teniae coli
• Haustra
• Oental appendices
• Caliber

Question 18

The mixed sympathetic and parasympathetic supply of the cecum is found in the periarterial plexuses surrounding which arteries?

Answer 18

Ileocolic and superior mesenteric

Question 19

Describe the venous drainage of the colon and right colic flexure.

Answer 19

Ileocolic and right colic to superior mesenteric vein

Question 20

Which flexures are at the ends of the transverse colon?

Answer 20

Right colic and left colic flexures at end of transverse colon

Question 21

What is the sympathetic supply of the transverse colon including plexuses?

Answer 21

T10-T12

• Less sphlanchnic
• Superior mesenteric ganglion

Question 22

The mixed supply of the transverse colon is found in the periarterial plexuses surrounding which arteries?

Answer 22

• Middle colic
• Right colic via anastomoses
• Left colic

Question 23

Which artery provides collateral circulation and is an anatomical variant?

Answer 23

Marginal artery

Question 24

The marginal artery is an anastomosis of which artery?

Answer 24

Marginal artery anastemoses of middle colic, right colic, ileocolic, left colic and sigmoid

Question 25

Describe the sympathetic nerve supply of the descending and sigmoid colons including splanchnic nerves and ganglia.

Answer 25

Descending = pelvic splanchnic which innervates the inferior hypogastric plexus

Question 26

The mixed supply of the descending and sigmoid colons are found in the periarterial plexuses surrounding which arteries?

Answer 26

Left colic and marginal