GI Viscera Flashcards
foregut includes _
oral pharynx, esophagus, stomach, and duodenum
beginning of the foregut is _
oral pharynx
esophagus innervation
vagus nerve
esophagus muscle type
skeletal and smooth
esophageal blood supply
upper: esophageal branches of inferior thyroid arteries
middle: esophageal branches of descending aorta
lower: esophageal branches of left gastric and left inferior phrenic artery
esophageal veins
upper: esophageal branches of inferior thyroid veins
middle: esophageal branches of azygous system of veins
lower: esophageal branch of left inferior phrenic and left gastric vein
main pancreatic duct is _
ventral
accessory pancreatic duct is _
dorsal
foregut receives blood from _
celiac artery
midgut receives blood from _
superior mesenteric artery
midgut is comprised of _
the small intestine and some of large intestine
hindgut receives blood from _
inferior mesenteric artery
hindgut is comprised of _
bottom half of large intestine
lesser curvature arteries
right and left gastric arteries
greater curvature arteries
right and left gastroepiploic arteries
celiac artery gives rise to _
left gastric, splenic, and common hepatic
common hepatic artery is comprised of _
gastroduodenal, supraduodenal, right gastric, proper hepatic, right and left hepatics, cystic arteries
arteries are named according to _
destination, not origin
gastroduodenal gives rise to _
posterior superior pancreaticoduodenal, right gastroepiploic, and anterior superior pancreaticoduodenal
splenic nerve gives rise to _
pancreatic, left gastroepiploic, and short gastric
superior mesenteric artery branches into _
inferior pancreaticoduodenal, intestinal, middle colic, right colic, and ileocolic
inferior mesenteric artery branches into _
left colic, sigmoidal (4 branches), and superior rectal
jejunum function
moves up and down to propel things through duodenum and prevent clog
Meckel’s diverticulum
remnant of vitelline duct; can cause ileal ulcerations (18 inches from ileocecal junction)
ileum does not contain _
circular folds but does contain lymph nodules (jejunum contains circular folds)
tenia coli
3 narrow strips of longitudinal smooth muscle along the length of the colon
McBurney’s point
diagonal in right lower quadrant connecting umbilicus to anterior superior iliac spine; determines suspected appendicitis
diverticulitis
bubble like outpockets of colon; can burst and drop into greater sac
portal vein components
superior mesenteric, splenic, and inferior mesenteric
portal system pathway
capillary –> portal vein –> capillary (liver sinusoids) –> hepatic vein (systemic)
common hemorrhage sites
esophageal varices, middle rectal vein, and umbilical vein
portal hypertension can lead to _
dilated veins radiating upward from caput medusa
internal sphincter
smooth muscle
external sphincter
skeletal muscle
levator ani
kinks anorectal junction for maintenance of fecal coontinence
internal hemorrhoids occur at _
internal venous plexus (No pain)
external hemorrhoid location _
external venous plexus (pain and itch)
anal sinuses
depression between anal columns that secrete lubricating mucus
lymphatic drainage of ducts follows _
branches of arteries and/or bile ducts
lymphatic drainage to cisterna chyli via_
celiac and superior-inferior mesenteric nodes
