Lab 4 Abdominal Viscera 3

Question 1

What are the branches of the inferior mesenteric artery?

Answer 1

left colic artery, sigmoid arteries, superior rectal artery

Question 2

Transverse trajectory toward the superior end of the descending colon

Answer 2

left colic artery

Question 3

3-4 arteries that pass through the sigmoid mesocolon to supply the sigmoid colon

Answer 3

sigmoid arteries

Question 4

Terminal end of the IMA, supplying the proximal rectum via right and left branches

Answer 4

superior rectal artery

Question 5

IMA and left ureter lie in the ____ space with the vessels ___ to the ureter. The vessels going to the descending colon stay more or less ___ while the vessels going to the sigmoid colon become ____ as they approach the sigmoid colon.

Answer 5

retroperitoneal space

anterior

retro

intraperitoneal

Question 6

The tributaries of what parallel the branches of the IMA?

Answer 6

inferior mesenteric vein

Question 7

Tracing the IMV superiorly along the left side of the IMA, passing posterior to the pancreas to join the ____ or ____ (less common).

Answer 7

splenic vein

superior mesenteric vein

Question 8

RLQ, intraperitoneal, own mesentery

Answer 8

cecum

Question 9

Attached to the cecum at the confluence of the teniae coli

Answer 9

veriform appendix

Question 10

Mesentery of the appendix containing what artery?

Answer 10

mesoappendix, appendicular artery- a branch of the ileocolic artery

Question 11

Extends superiorly from the cecum from the level of the ileocecal junction to the right colic flexure

Answer 11

ascending colon

Question 12

Extends from the right colic flexure to the left colic flexure. The ___ flexure is more superior than the ___. This allows ___ to be freely mobile. What are the two mesenteries here?

Answer 12

transverse colon

left is more superior than the right

transverse colon freely mobile

transverse mesocolon and greateromentum

Question 13

Extends inferiorly form the left colic flexure to the LLQ

Answer 13

descending colon

Question 14

Extends from the descending colon at the iliac crest to the level of the 3rd sacral segment within the pelvis where it is continuous with the rectum. What is the mesentery?

Answer 14

sigmoid colon

sigmoid mesocolon

Question 15

3 narrow bands of longitudinal muscle

Answer 15

teniae coli

Question 16

Outpouchings of the colon wall

Answer 16

haustrum

Question 17

Small accumulations of fat covered by visceral peritoneum

Answer 17

omental appendices (epiploic appendices)

Question 18

What is found on the anterior surface of the pancreas? BEWARE

Answer 18

pancreaticoduodenal vessels

Question 19

Passes transversely to the right from the pylorus of the stomach with the hepatoduodenal ligament attached to it. Considered to be intra or retro?

Answer 19

superior (first part) of duodenum

intraperitoneal (L1)

Question 20

Found paravertebral to the right, anterior to the hilum of the right kidney, right renal vessels, and inferior vena cava. Considered to be intra or retro?

Answer 20

descending (second) part of duodenum

retroperitoneal (L2)

Question 21

Lies anterior to the inferior vena cava and abdominal aorta. Consider to be intra or retro? What crosses anteriorly? Posteriorly?

Answer 21

horizontal (third) part of duodenum

retroperitoneal (L3)

Anteriorly- superior mesenteric vessels

Posteriorly- inferior mesenteric vessels

Question 22

Ascends up to L2 vertebral level, retroperitoneal until it bends anteriorly to become intraperitoneal at its junction with the jejunum

Answer 22

ascending (fourth) part

Question 23

Thickest portion of pancreas, lies within the curvature of the duodenum, anterior to the IVC

Answer 23

head

Question 24

Small, inferior projection of the head of the pancreas, posterior to the superior mesenteric vessels

Answer 24

uncinate process

Question 25

Superior to the uncinate process of pancreas, anterior to the superior mesenteric vessels and formation of the hepatic portal vein

Answer 25

neck

Question 26

Extends between the neck and the tail of the pancreas, crosses the abdominal aorta

Answer 26

body

Question 27

The narrow left end of the body of the pancreas, its tip lies in the splenorenal ligament and contacts the hilum of the spleen

Answer 27

tail

Question 28

Branches of the gastroduodenal artery (2)

Answer 28

anterior superior pancreaticoduodenal artery posterior superior pancreaticoduodenal artery

Question 29

What is usually the most proximal branch of the superior mesenteric artery? Where does it enter the pancreas?

Answer 29

inferior pancreaticoduodenal artery enters the inferior portion of the head of the pancreas to anastomose with the superior set

Question 30

What passes along the superior border of the pancreas? What are the two branches that supply the pancreas?

Answer 30

splenic artery - dorsal pancreatic artery (neck of pancreas) - greater pancreatic artery (half the length between the neck and tail)

Question 31

What has anastomosis with the greater omentum along the greater curvature of the stomach?

Answer 31

left and right gastro-omental artery

Question 32

What is the most medial branch of the inferior mesenteric artery?

Answer 32

superior rectal artery

Question 33

The suspensory ligament of the duodenum is found at what junction?

Answer 33

duodenojejunal

Question 34

Folds of mucosa within the body of the stomach

Answer 34

rugae (gastric folds)

Question 35

Horizontal narrowing of the body of the stomach, elading to the sphincter

Answer 35

pyloric antrum

Question 36

Thick, dense structure, an actual sphincter that regulates gastric emptying

Answer 36

pyloric sphincter

Question 37

Opening in the center of the sphincter

Answer 37

pyloric orifice

Question 38

Fully circumferential folds of mucosa oriented perpendicular to the longitudinal axis of the small intestine

Answer 38

circular folds (plicae circularis)

Question 39

Small elevation of mucosa on the posteromedial wall through which the main pancreatic duct and the bile duct open into the 2nd part of the duodenum

Answer 39

major dudoenal papilla

Question 40

Typically found midway between the superior and inferior borders of the pancreas

Answer 40

main pancreatic duct

Question 41

If you trace the main pancreatic duct toward the tail and to the right into the depths of the head, you will find it merging with what?

Answer 41

the bile duct near the descending duodenum and the major duodenal papilla

Question 42

What is found only within the head of the pancreas superior to and merging with the main duct?

Answer 42

accessory pancreatic duct

Question 43

Where are the circular folds (plicae circulares) larger and closer together? a. jejunum b. ileum

Answer 43

jejunum

Question 44

What is found on the interior of the ileum?

Answer 44

Peyer's patches

Question 45

What is found between adjacent haustra?

Answer 45

semilunar folds (plicae semilunares)