Stomach midgut and associated arteries

Question 1

what are the boundaries of the lesser sac

Answer 1

anteriorly-stomach, lesser omentum
posteriorly-pancreas
inferiorly-omental bursa
superiorly-liver, diaphragm
left-spleen
right-epiploic foramen, liver

Question 2

is the cardiac orifice an anatomical sphincter

Answer 2

no

Question 3

is the pylorus an anatomical sphincter

Answer 3

yes

Question 4

at what vertebral level does the pylorus usually lie

Answer 4

L1

Question 5

How does the left vagus nerve come to lie anteriorly to stomah and right vagus posteriorly

Answer 5

rotation of the stomach during development

Question 6

What is a hiatus hernia

Answer 6

protrusion of stomach through diaphragm

Question 7

At what vertebral level is the coeliac trunk given off

Answer 7

T12

Question 8

What are the characteristics of the vasa recta and arcades in the jejunum

Answer 8

long vasa recta, small arcades

Question 9

What are the characteristics of the vasa recta and arcades in the ileum

Answer 9

short vasa recta, large arcades

Question 10

what is Meckel’s diverticulum

Answer 10

vestigial remnant of vitelline duct–>bulge in SI

Question 11

What are taeniae coli

Answer 11

three longitudinal muscle layers

Question 12

what are haustra

Answer 12

sacculations of the large intestine

Question 13

what are appendicies epiploicae

Answer 13

fat filled tags

Question 14

what is diverticulosis and what happens when this becomes inflammed

Answer 14

pouching of colon–>usually in sigmoid

diverticulitis

Question 15

Where does pain usually first occur in acute appendicitis

Answer 15

para-umbilically

Question 16

why is it dangerous to give laxatives to patients suspected of appadicitis

Answer 16

vigorous contraction of gut can rupture inflammed appendix and cause peritonitis

Question 17

Where is McBurney’s point

Answer 17

one-third of the distance from the ASIS to the umbilicus

Question 18

Why is the colon mostly freed from its lateral side

Answer 18

blood vessels on medial side–> avoids rupture

Question 19

What is the first branch given off by the superior mesenteric artery

Answer 19

inferior pancreaticoduodenal