Abdominal Cavity II lecture ii Flashcards
main pancreatic duct begins in the _ and runs through the _ of the gland to the pancreatic head, where it gets very close to the _ duct
begins in the tail and runs through the parenchyma; very close to the bile duct
hepatopancreatic ampulla formed by the union of _ and _ duct
formed by union of the main pancreatic duct and bile duct; short and dilated;
the hepatopancreatic ampulla opens into the descending part of the duodenum at the _
major duodenal papilla
pancreatic ducts: the opening at the major duodenal papilla is controlled by the
hepatopancreatic sphincter
accessory pancreatic duct opens into the duodenum at the
minor duodenal papilla
superior pancreaticoduodenal artery is a branch from the _
celiac trunk
inferior pancreaticoduodenal artery is a branch from the _
superior mesenteric artery
blood supply to the pancreas:
- celiac trunk mostly (superior pancreaticoduodenal arteries)
- superior mesenteric artery (inferior pancreaticoduodenal arteries)
- multiple branches of splenic artery
duodenum: section of SI extending from _ of stomach to _
extending from pyloric part of stomach to jejunum
duodenum surrounds _ of pancreas
head
duodenum begins rt of body’s midline and ends lt of the midline at level of lumbar vertebra 2 at the _
duodenojejunal flexure (jxn)
duodenum is a mostly _ organ
retroperitoneal
4 parts of duodenum
- superior
- descending
- inferior (horizontal)
- ascending
descending part of duodenum: contains _ at which point the hepatopancreatic ampulla drains the bile duct and the main pancreatic duct into the duodenum
descending part of duodenum contains the major duodenal papilla
descending part of duodenum: contains _ at which point accessory pancreatic duct drains into the duodenum
descending part of duodenum also contains minor duodenal papilla
the 4 digestive organs and where their blood supply comes from
stom, SI, LI, and pancreas; blood supply comes from 3 branches of aorta: celiac trunk, sup mesenteric artery, and inf mesenteric artery
hepatopancreatic sphincter prevents
reflux of duodenal contents back into duct (hepatopancreatic ampulla)
duodenum blood supply (2)
- gastroduodenal artery, via smaller named arteries
2. superior mesenteric artery, via smaller named arteries
jejunum and ileum is a _ organ
intraperitoneal
jejunum begins at _ in _ quadrant
duodenojejunal flexure in upper lt quadrant
ileum ends at _ in _ quadrant
ileocecal junction in lower right quadrant
jejunum and ileum together about _ feet long
20 feet long (60% of this being ileum)
jejunum and ileum attach to _ wall by the SI mesentery (mesentery proper)
posterior abdominal wall by SI mesentery (mesentery proper)
SI mesentery is a _ layer formed by:
double layer formed by 2 layers of visceral peritoneum that stretches up to and attaches to posterior abdominal wall; contains fat, blood vessels, and nerves that supply the wall of the intestine itself
arterial blood supply of jejunum and ileum:
superior mesenteric artery
venous drainage of jejunum and ileum:
superior mesenteric vein (to portal vein)
LI: feats of the colon: (3)
- teniae coli
- haustrations
- omental (epiploic) appendices
LI: teniae coli
three longitudinal bands of smooth muscle
LI: haustrations (haustra)
pouches of the wall of the colon btwn the teniae
LI: omental (epiploic) appendices
small, fatty projections attached to one of the teniae coli bands
LI cecum and appendix: cecum is a _ pouch continuous with the _ colon from which the _ extends
cecum is a large, blind pouch continuous with the ascending colon from which the vermiform appendix extends
LI cecum and appendix: ileal orifice (w/ ileocecal valve)
opening of ileum into cecum
LI: ascending colon spans from _ to _
from cecum to rt colic (hepatic) flexure
LI: transverse colon spans from _ to _
from rt colic flexure to left colic (splenic) flexure
transverse colon is suspended from the abdominal wall by _
the transverse mesocolon
transverse colon arterial supply:
mostly the middle colic artery (a branch of the superior mesenteric artery)
asc colon does not include
cecum
appendix protrudes from _ and contains _ tissue
cecum (veriform) and contains lymphatic tissue
LI: descending colon spans from _ to _
from lt colic flexure to pelvic brim (sigmoid colon)
pelvic brim aka
pelvic inlet is where descending colon stops and sigmoid colon begins
LI: descending colon passses over _
lateral border of lt kidney
LI: descending colon arterial blood supply
branches of inf mesenteric artery
transition point
where GI tract goes from being supplied by the sup mesenteric artery to inf mesenteric artery
LI: sigmoid colon begins at _ and is _-shaped
begins at pelvic brim and is S-shaped
LI: sigmoid colon becomes continuous w/ _ at _ vertebra 3
rectum at sacral vertebra 3
LI: sigmoid colon is suspended by
sigmoid mesocolon
LI: sigmoid colon arterial supply
branches of inferior mesenteric artery
LI: rectum fixed segment of LI that extends inferiorly (mostly) from _
fixed segment of LI that extends inferiorly (mostly) from sigmoid colon
LI: rectum follows the curve of the
sacrum and coccyx
