The Midgut and Hindgut Flashcards
what are some distinguishing characteristics of the jejunum and ileum?
colour, wall, vascularity, vasa recta, arcades, fat in mesentery, circul
- also ileum has numerous peyers patches.
which major blood vessel supplies the jejunum and ileum?
SMA
what do veins surrounding the jejunum and ileum drain to?
SMV
which set of lymph nodes does lymph drain from the jejunum and ileum?
superior mesenteric nodes
which part of the ANS stimulations reduces the secretion and motility of the intestina and also acts as a vasoconstrictor?
sympathetic
what is the nerve supply of the jejunum and ileum? and where is pain generally felt?
- superior mesenteric plexus.
- pain generally goes to the umbilical region.
the large intestine can be distinguished from the small intestine by which three features?
- teniae coli.
- omental apendices.
- haustra.
label this diagram of the large intestine
how are parts of the large intestine peritonised?
- caecum > intra
- ascending colon > retro
- transverse colon > intra
- descending colon > retro
- sigmoid colon > intra
in which of the 9 abdominal regions is the caecum and appendix located?
right inguinal region
what two structures open into the caecum
ileum and appendix
where is Mcburney’s point and why is it clinically useful?
- 1/3 of the distance from right anterior superior iliac spine to the umbilicus.
- site of maximum tenderness in acute appendicitis.
which branches of the SMA supply the ascending colon?
right colic
ileocolic
which arteries supply the transverse colon?
- SMA> right colic and middle colic.
- IMA> left colic.
which branch of the IMA supplies the descending colon?
left colic
