SFP: fuck them kids Flashcards
what are the boundaries of the foregut
primordial pharynx to proximal aspect of bile duct opening
what are the boundaries of the midgut
end of proximal aspect of bile duct opening to first 2/3 of transverse colon
what are the boundaries of the hind gut
distal 1/3 of transverse colon and superior part of anal canal
what is recanalization
the re-opening to form a lumen in both the esophagus and duodenum
how does the esophagus elongate
proliferation
what results from esophageal stenosis/atresia
decreased amniotic fluid absorption and resulting polyhydraminos
what is heterotopic gastric mucosa
an ectopic epithelium that results in acid secretions tht irritate the esophageal mucosa
the stomach is derived from
endoderm
the stomach is suspended within the…
dorsal mesentary
the stomach is suspended by the
dorsal mesogastrium
what is the positioning of the left side of the stomach and left vagus nerve
anterior
what is the positioning of the right side of the stomach and right vagus nerve
posterior
what develops from the dorsal mesogastrium
dorsal bud of pancreas, spleen, greater omentum
what develops from the ventral mesogastrium
liver diverticulum/liver, gallbladder, bile ducts, ventral bud of pancreas
where does the ventral mesogastrium disappear
inferior to liver (mid and hindgut regions)
what forms the spleen
mesenchyme condensations within the dorsal mesogastrium
what causes the spleen’s location
rotation of the stomach
what is congenital hypertrophic pyloric stenosis
thickened muscle of the pyloris obstructs passage of food, causes projectile vomiting
the dudenum originates from both…
foregut and midgut
what is derived from hepatic diverticulum
liver, gallbladder, bile ducts, ventral pancreatic bud
when does bile formation start
week 12
which direction does the dupdenum rotate
to the right
what causes recanalization
widening of the canal
what is duodenal atresia
lack of recanalization of the lumen
what results in a double bubble on ultrasound
dupdenal atresia
what does vascular occlusion cause
atresia of jejunum, ileum, and colon; doesnt cause recanalization issues
what causes physiological midgut herniation
rapid growth of intestine that expends out into the umbilicus
the midgut rotates
270 degrees counterclockwise
what is a subhepatic cecum
an incomplete (180 degree) rotation of the cecum
what is meckels diverticulum
persistent midgut yolk sac (vitelline duct remnant) connection to umbilicus
what marks the location of the appendix
merging of the tenia coli bands
what is fixation of intestines
mesentery fuses with the body wall or other mesentery to secure the intestines
what is gastroschisis
failure of body wall to fuse in the abdominal region during folding
what is a midgut volvulus
part of the intestine twists on itself in the abdominal cavity
what is hirschprungs disease
absence of peristalsis in the aganglionic region of the colon prevents movement of intestinal contents; big ol colon. always involves the distal end
what comprises the cloaca
endoderm
the cloacal membrane is comprised of
endoderm and ectoderm
what is the urorectal septum
mesenchyme separating the urachus and urogenital sinus from the hindgut structures (rectum and anal canal)
what is a rectoperineal fistula
there is an external opening but not through the anal canal
what is a rectovestibular fistula
opens into vaginal vestibule
what is a rectovaginal fistula
opens into vagina canal
what is a rectourethral fistula
opens into urethra
what is a rectalvesical fistual
opens into bladder
what is anal atresia
abnormal anal canal
what ligaments are derived from ventral mesentary
hepatodupdenal and hepatogastric
what helps form a single pancreas
stomach rotation brings ventral and dorsal pancreatic buds together
what causes annular pancreas
abnormal rotation of vental bud or ventral bud rotation in opposite direction
what might annular pancreas cause
duodenal atresia or stenosis
