GI Tract Relationship and Development Flashcards
what is the importance of the lesser sac?
• Perforation of the posterior wall of the stomach – maybe by a gastric ulcer – can lead to spilling of gastric contents – inducing peritonitis → pancreatitis
what type of artieral structure does the jejunum have?
Prominent arcades
Longer vasa recta
what type of arterial structures does the ileum have?
Less prominent arcades
Shorter to vasa recta
what is on luminal surface of jejunum?
lots of plica!
what is on luminal surface of ileum?
Less pronounced plica
Do have peyers latches = lympathics
what happens to the taenia coli at the rectosigmoidal junction?
- taenia coli becomes one continuous layer of muscle instead of three discrete bands
- taenia coli also thickens which helps with fecal expulsion
where is the stomach derived from?
foregut
where is the duodenum derived from?
foregut and midgut
where is the small intestine derived from?
midgut
what does the thoracic duct drain?
the lymph of lower half and upper left quadrant of the body and ALL the viscera
what lymph drain the large intestine?
SML and IML
What lymphatics drain the stomach?
pancreatico splenic, left gastric and right gastroepilpoic nodes –> celiac group
what lymphatics drain the duodenum?
pancreatico duodenal group –> celiac group
where does the vagus n. give parasymp. until?
the left colic flexure then it becomes pelvic splanchnic (S2-4)
what are common with portal hypertension?
butt - rectal
gut - esophagus
caput - paraumbilical
