Small intestine Flashcards
How long is the small intestine
approx 7m
What are the three parts of the small intestine
Duodenum
Jejunum
ileum
What part of the small intestine in C-shaped
Duodenum
What does the duodenum surround
The pancreas
What are the parts (in order) of the duodenum
Superior
Descending
Inferior/horizontal
Ascending
What is the beginning of the superior part of the duodenum called
Duodenal cap (ampulla)
What part of the duodenum does the bile duct and pancreas drain into
Descending part
What is the longest part of the duodenum
Inferor or Horizontal part
What part of the duodenum terminates at the duodenojejunal flexure
Ascending part
Is the duodenum peritoneal or retroperitoneal
All of it is retroperitoneal except for the duodenal cap
What passes anterior to the third part of the duodenum
Superior mesenteric artery and vein
What gives blood supply to the duodenum
Superior pancreaticoduodenal artery
Supraduodenal artery
inferior pancreaticoduodenal artery
Which artery that supplies the duodenum is not from the gastroduodenal artery, which artery is it from
Inferior pancreaticoduodenal artery
from superior mesenteric artery
What extends from the diaphragm to the duodenojejunal flexures
Suspensory muscle of the duodenum
What give autonomic nerve supply to the duodenum
celiac and superior mesenteric plexuses
What is the most common site for a duodenal ulcer to occur
Duodenal cap
If the contents of a duodenal ulcer perferate into the perironeal cavity what side does it end up on
Right side
What organs are often damaged due to a duodenal ulcer
Liver
Pancreas
Gall bladder
if a person has a duodenal ulcer where might they have a subluxation
Mid thoracic region
What part of the small intestine makes up the proximal two-fifths
Jejunum
What part of the small intestine makes up the distal three fifths
Ileum
What suspends the jejunum and the ilium
Mesentery
What does the jejunum mainly absorb
Nutrients
What does the ileum mainly absorb
fat soluble vitamins, B12, bile salts
What are the terminal branches of arteries that travel through the mesentery to supply the small intestine
Vasa Recta
What are the folds in the small intestine called
Plicae circulares
What are the aggregations of lymphoid tissue found in the walls of the small intestine
Peyer’s patches
What supplies blood to the ileum and jejunum
Jejunal and ileal branches of the superior mesenteric artery
What gives autonomic innervation to the ileum and jejunum
Superior mesenteric plexus
What is ileal Diverticulum
common malformation of the digestive tract
What causes ileal diverticulum
remnants of the embryonic vitelline duct
What happens if the ileal diverticulum becomes inflamed
it will mimic apendasitis
What is a finger-like pouch that projects off the ileum and contains all the layers of the ileum.
Ileal diverticulum
What tissues may also be found in an ileal diverticulum
pancreatic + gastric tissue (may secrete acid)
What is the inflamatory bowel disease that affects the distal ileum, resulting in pain and malapsorption
Crohn’s disease
What appearance does Crohn’s disease give on a radiograph
Cobblestone
Subluxations of which segments may affect motility
Lower thoracic
