The Midgut

Question 1

what structures comprise the midgut?

Answer 1

the small intestine
cecum 
appendix
ascending colon
proximal 2/3rds of the transverse colon

Question 2

what makes up the small intestine?

Answer 2

duodenum, jejunum and ileum

Question 3

what are the differences between the jejunum and ileum?

Answer 3

jejunum is a deeper red, thick and heavy, fewer larger loops, long vasarecta, greater vascularity, few lymphoid nodules and less fat in mesentery
ileum is a pal pink, thin and light, many short loops, less vascularity, short vasarecta, many lymphoid nodules and more fat in mesentery

Question 4

describe the features of the dudodenum compared to the other parts of the small intestine

Answer 4

it is the smallest, widest and most fixed part of the small intestine

Question 5

what is the blood supply of the mid gut and where does this originate from?

Answer 5

superior mesenteric artery from a branch of the abdominal aorta L1

Question 6

what are the 2 main branches of the SMA?

Answer 6

jejunal

illeal arteries

Question 7

what are the branches of the SMA?

Answer 7

jejunal and illeal arteries
middle colic
right colic
illiocolic

Question 8

what is the parasympathetic nerve supply of the mid gut?

Answer 8

vagus

pelvis splanchnic nerves S2,3,4