Flashcards in Embryo of Gut (In Class)- Cole Deck (40)
What does the endoderm make?
what are mesenteries?
reflections of parietal peritoneum onto gut tube
what are secondarily reteroperitoneal?
things that had dorsal mesentery
only place that there is ventral mesentery in adults?
3 segments of gut? what do they have?
foregut, midgut, hindgut; have own blood supply and innervation
esophagus to 1/2 duodenum, liver, gallbladder, pancreas
forgut gets supplied by?
midgut is supplies by?
superior mesenteric artery
hindgut is supplied by?
inferior mesenteric a.
innervation of foregut? where does it synapse?
greater splanchnic n. (T5-9); celiac plexus
midgut is innervated by? synapses?
Lesser Splanchnic (T9-T12)
Parasympathetics to foregut and midgut? synapse where?
vagus n. (CN X); organ walls
parasympathetics to hindgut?
S2-4 (pelvic splanchnic n.)
what kind of defect is an esophageal atresia considered to be?
hypertrophic pyloric stenosis appears when? as what?
2-3 weeks after birth; projectile, no bilious vomit
where does the liver develop? what else develops there?
ventral mesentery; gallbladder and bile ducts
where does the pancreas develop
buds in both ventral and dorsal mesentery
ventral mesentery gets divided into what 2 parts?
falciform ligament and lesser omentum
ligamentum teres hepatis is the remnant of what?
obliterated left umbilical v.
some of the things that extrahapatic biliary atresia presents with?
jaundice, pale stool, dark urine
treatment of extra-hepatic biliary atresia?
surgical correction or transplant
pdx1 is specific for development of what organ?
pax4 regulates what?
cells that secrete insulin, somatostatin, & pancreatic polypeptide
pax 6 regulates?
cells secreting glucagon
how does annular pancreas present?
duodenal obstruction; pancreatic buds form a ring around duodenum
where is ectopic pancreatic tissue most common?
stomach or ileum (ileal or Meckel's diverticulum)
apple peel atresias are associated with what normally?
by what week does the intestine move back into body?
what is an intussuception?
part of gut tube tunneled into another part