Flashcards in Organs of the GI tract Deck (41):
What is the trick for remembering what pierces the diaphragm at certain vertebral levels?
I 8 10 Eggs At 12
-IVC at T8, Esophagus at T10, and Aorta at T12
What is a sliding hiatal hernia
where the abdominal esophagus and parts of the stomach herniate into the thorax
-esphageal hiatus either enlarges or weakens
What is a paraeophageal hiatal hernia?
a defect in the diaphragm next to the esophageal hiatus
-permits fundus of stomach to herniate
At what vertebral level is the stomach fixed?
left end is at T10-11 and the right side is at L1-2
Which parts of the duodenum are secondarily retroperitoneal?
the middle 2.... 2nd and 3rd
What is the first part of the duodenum surrounded by?
the hepatoduodenal ligament
Where does the root of THE mesentery begin?
the duodeno-jejunal flexure
What are the 4 parts of the duodenum?
Superior, descending, horizontal, and ascending
What important thing is behind the superior part of the Duodenum?
the portal triad
Where do the bile and pancreatic ducts enter into the duodenum?
The 2nd part
-makes the major duodenal papilla on the inside of it
What crosses the anterior of the horizontal duodenum?
SMA and SMV
Is the second part intra or retroperitoneal?
it is ALL retroperitoneal
What holds the 4th part (ascending) of the duodenum in place?
the suspensory ligament of the duodenum
-anchors the 4th part of the duodenum to the right crus of the diaphragm
what holds the jejunum and the ileum to the posterior abdominal wall?
-remember that this part of the Small intestine is a lot more mobile
Which part of the Small intestine is more vascularized (long vasa recta and simple arcades) and has more plicae circulares?
Which part of small intestine has fewer plicae circulares, complex arcades and short vasa recta?
What is meckel's diverticulum?
A remnant of the vitelline duct
-arises from antimesenteric border of the ileum
-it is just a thing that juts out from the ileum
-2% of population, 2 feet from ileocecal junction, and about 2 inches long
What is the function of haustrae?
to slow the movement of feces
what are the taenia coli and where do they converge?
3 bands of longitudinal muscle on the outside of the colon
-converge at the root of the appendix
what is the ileal papilla
a cone-like projection from the ileum into the cecum
Where is the opening for the appendix?
inferior to the ileal papilla
Which part of the colon is intraperitoneal?
the transverse and sigmoid part
Which part of the colon is retroperitoneal?
the ascending and descending part
what is the anorectal line?
a line joining the tops of the anal columns
what is the rectal ampulla?
the dilated terminal part of the rectum
-puborectalis muscle is in there
what is the pectinate line?
a line joining the inferior ends of the anal valves
What primary embryologic layer does the spleen develop from?
What ligaments are attached to the spleen?
gastrosplenic and splenorenal
What are the parts of the pancreas from right to left on the body?
head, neck, body, and tail
-the tail is against the spleen
Where does the pancreas develop from?
a ventral bud in the ventral mesentery and a larger dorsal bud in the dorsal mesentery
-rotation of the stomach and duodenum brings the two buds together
What is the falciform ligament?
a double layer of peritoneum that connects the liver to the anterior wall
What defines the bare area of the liver?
the anterior, posterior, right , and left coronary ligaments
between what two lobes does the ligamentum venosum run?
between the left and caudate lobes
What is the porta hepatis?
a transverse fissure between the caudate and quadrate lobes
-transmits the portal triad
What are the contents of the portal triad?
proper hepatic A.
What did the ligamentum teres used to be?
an umbilical vein (left? maybe)
what did the ligamentum venosum used to be?
the ductus venosus
What makes up the lesser omentum and connects the liver to the stomach?
hepatoduodenal and hepatogastric ligaments
Describe the extrahepatic bile passage
right and left hepatic duct come together to make the common hepatic duct... this joins the cystic duct from the gallbladder to make the common bile duct
Which ligament does the bile duct run in?
the hepatoduodenal L.