Large intestine

Question 1

teniae coli

Answer 1

3 bands of longitudinal muscle seen in cecum and ascending colon

Question 2

Haustra

Answer 2

(sacculations)

bulges due to the teniae coli

Question 3

what does the cecum contain

Answer 3

the iliocolic junction

aka the iliocecal valve which is a one way valve

it is INTRA PERITONEAL

Question 4

McBurneys point

Answer 4

Location of appendix

- 1.5 cm in line between ASIS and umbilicus

Question 5

right colic flexure*

Answer 5

R side deep to ribs 9 10 overlapped by liver

more posterior

Question 6

Left colic flexure,

what is it supported by?*

Answer 6

More superior than R colic
less mobile
anterior to left kidney

supported by

• phrenicolic ligament
• transverse mesocolon

Question 7

Parts of colon that are intraperitoneal

Answer 7

transverse

sigmoid

Question 8

part of colon that are retroperitoneal

Answer 8

ascending

descending

Question 9

branches of the SMA

Answer 9

• jejunal and ill
• ileocolic artery— ascending colon cecum and appendix
• right colic artery– to right colic flexure
• middle colic artery– transverse colon

Question 10

branches of IMA

Answer 10

• left colic– to left colic flexure
• descending branch of IMA (sigmoidal)
• superior rectal artery ( aka superior hemorrhoidal artery) - end artery of IMA

Question 11

Anastomosis of IMA and SMA

Answer 11

SMA and IMA anastomose to form the marginal artery*

Question 12

inferior mesenteric drains into

Answer 12

splenic vein

- tributaries from portions of large intestine

Question 13

what drains into the splenic vein

Answer 13

short gastric veins
L gastro omental vein
pancreatic veins
IMV

Question 14

what drains into SMV

Answer 14

Ilio and jejunal veins 
iliocolic vein
right colic vein 
middle colic vein 
right gastroomental vein 
pancreaticoduodenal vein

Question 15

what drains directly into portal

Answer 15

pyloric vein
cystic vein
paraumbilical veins

• R and L gastric veins
• superior rectal veins?

Question 16

what anastomoses w Left gastric vein? (p)*

Answer 16

esophageal and azygos vein

Question 17

what anastomoses with superior rectal vein (P) drain into?*

Answer 17

superior rectal anastomoses with inferior and middle rectal veins–

drain into internal iliac vein (s)

Question 18

what anastomoses with paraumbilical veins (p)*

Answer 18

superficial epigastric veins

drain into external iliac vein (s)

Question 19

what anastomoses with colic veins ( p)*

Answer 19

renal lumbar and phrenic veins (s)

Question 20

the lumbosacral plexus composed of

Answer 20

lumbosacral trunk L4L5

sacral plexus S1-S4