Anatomy of GI Bleeding Flashcards
(46 cards)
how many paracolic gutters are there?
two, right and left
where are the paracolic gutters found?
between the lateral edge of the ascending/descending colon and the abdominal wall
what are the paracolic gutters part of?
the greater sac of the peritoneal cavity
which flexure of the colon lies more superiorly?
splenic
what are the teniae coli?
3 distinct longitudinal bands of thickened smooth muscle
where do the teniae coli run?
from the caecum to the distal end of the sigmoid colon
what causes the formation of haustra?
tonic contraction of the teniae coli
where do the caecum and appendix lie?
in the right iliac fossa
what is the most common position of the appendix?
retrocaecal
where is the appendiceal orifice found?
on the posteromedial wall of the caecum
where does the appendiceal orifice correspond to?
mcburney’s point on the anterior abdominal wall
where is mcburney’s point?
a third of the way between the right ASIS and the umbilicus
where does the sigmoid colon lie?
the left iliac fossa
what is the mesentery attached to the sigmoid colon called?
the sigmoid mesocolon
why does the sigmoid colon have a large degree of movement?
it has a long mesentery
what is there a risk of due to the length of the sigmoid mesocolon?
sigmoid volvulus
what is sigmoid volvulus?
when the sigmoid colon twists around itself
what can sigmoid volvulus cause?
obstruction and infarction if not treated
is the abdominal aorta intra or retro peritoneal?
retroperitoneal
where does the abdominal aorta lie?
midline
anterior to vertebral bodies
left of the IVC
what are the three midline branches of the abdominal aorta?
celiac trunk
superior mesenteric artery
inferior mesenteric artery
what is supplied by the celiac trunk?
foregut organs
what is supplied by the superior mesenteric artery?
midgut organs
what is supplied by the inferior mesenteric artery?
hindgut organs
