lect 9- Development of the Digestive System Flashcards
what is the cranial end of the primitive gut
oropharyngeal membrane
what is the caudal end of the primitive gut
cloacal membrane
what is the endoderm of the gut innervated by
external and enteric
what is another name for the intraembryonic cavity
coelom (body cavity) encased in mesoderm
what are organs that form between the mesentery and the posterior body wall and give some examples
retroperitoneal (kidney, aorta, IVC)
what are organs that form within mesenteries, but later fuse with the posterior body wall
secondarily retroperitoneal (pancreas, part of duodenum)
what are organs that are from the dorsal or ventral body wall that are inside the peritoneal cavity
intraperitoneal
when does the respiratory diverticulum (lung bud) appear on the ventral wall
at 4 weeks
what are symptoms of esophageal atresia and tracheoesophageal fistulas
cyanosis, coughing, gagging, choking with attempted feeding
how much does the stomach rotate in the CORONAL plane
45 degrees moving the pylorus anterior and to the right
what does the mesogastrium grow into
greater omentum
what does the lesser momentum connect
liver and duodenum to lesser curvature of stomach
what does the falciform ligament do
attaches the liver to the anterior body wall
where does most of the pancreas develop from
dorsal bud
what forms the inferior part of the head of the pancreas, including the uncinate process
ventral pancreatic bud
what is the total rotation of the gut
270 degrees
what week does the appendix form
11th
what is the twisting of the intestine
volvulus
what are symptoms of volvulus
bloody stools, constipation, biliary emesis
what is the ligament of treitz
suspensory ligament of duodenum that connects the duodenum to the diaphragm
what disorder is characterized by elevated AFP
omphalocele
what part of the gut does not rotate
Hindgut
what forms the urogenital sinus
allantois
what is the growth of the urorectum septum into the urogenital sinus directed by
SHH
