lecture 5 the abdomen and gut Flashcards
the stomach begins at the opening of the
cardiac sphincter
cardiac sphincter
connects esophagus to stomach, called this because it is close to the heart
fundus of the stomach
superior round area half moon
visceral mesentery
shinny covering on the surface of the stomach
greater curvature of the stomach
inferior/left side of the stomach touches transverse colon from the esophagus/cardiac sphincter to the pylorus/pyloric sphincter ON THE OUTSIDE
lesser curvature of the stomach
superior/right side of the stomach from the esophagus/cardiac sphincter to the pylorus/pyloric sphincter ON THE INSIDE
pylorus
bottom transverse portion of the stomach leading into the pyloric sphincter
pyloric sphincter
from the pylorus to the duodenum
small intestine
duodenum, jejunum, ileum
duodenum
first segment from stomach, leads to jejunum, superior and deep, makes a C shape
jejunum
superior portion of intestinal loops (usually what you see on cadaver. on the top left corner, connects duodenum to ileum
ileum
inferior, connects jejunum and ascending colon
Large intestine (colon)
cecum, vermiform appendix, ascending colon, right colic flexure, left colic flexure, transverse colon, descending colon, sigmoid colon
cecum
small sac at the end of the ascending colon
vermiform appendix
little nub between cecum and ileum
ascending colon
on the right side, ending at the right colic flexure
right colic flexure
top right corner of colon, separating ascending colon and transverse colon
transverse colon
between ascending and descending colon, divided by right and left colic flexures
left colic flexure
top left corner of colon, separating transverse and descending colon
descending colon
on the left side, starting at the left colic flexure and ending at the sigmoid colon
sigmoid colon
shaped like a sigma <3 at the end of the descending colon ends at rectum
mesentery
double layer of membrane in the peritoneum only suspends parts of the gut tube into the peritoneal cavity
Early development: dorsal mesentery
runs from the posterior (dorsal) body wall to the dorsal surface of the stomach and the intestines
Early development: ventral mesentery
runs from ventral body wall to the liver and then from the liver to the ventral surface of the stomach
Ventral mesenteries
falciform ligament and the lesser omentum
Falciform ligament
runs from ventral body wall to the ventral surface of the liver (contains bile duct and hepatic portal vein)
lesser omentum
runs from the liver to the lesser curvature of the stomach
fatty and yellowish