Lower abdomen lecture Flashcards
Gastric juices convert a mass of food to a semiliquid mixture
chyme
entrance from esophagus
Cardiac orifice
exit to duodenum through the
Pyloric sphincter
temporary folds within the body of the stomach are called
Rugae
acts as a food blender and a reservoir
stomach
allow for expansion of the stomach & for movement
Rugae
portion of the small intestine that is retroperitoneal
Duodenum
portion of the small intestine that is relatively fixed
Duodenum
portion of the small intestine that is tethered but mobile
jejunum & ileum
where does the ileum empty?
ileocecal junction
permanent folds within intestine that increase surface area
Plicae Circularis
fold in the small intestine that become more diffuse distally
Plicae Circularis
the superior portion of the the duodenum is at what vertebral level
L1
the superior portion of the duodenum is what to the bile duct and gastroduodenal A.
Anterior
the descending portion of the duodenum is at what vertebral level
L2-3
the descending portion of the duodenum is at what vertebral level
L3-2
the descending portion of the duodenum is anterior to what
inferior vena cava & aorta
the descending portion of the duodenum is posterior to what
SMA
widest part of the small intestine
duodenum
the duodenum is connected to the liver by what ligament
hepatodoudenal
what part of the duodenum isn’t retroperitoneal
the superior part
how many branches of the SMA contribute to the supply go both jejunum and ileum
15-18
what portion of arterial supply to the jejunum & ileum increases from proximal to distal
arterial arcades
what portion of arterial supply to the jejunum & ileum decreases from proximal to distal
Vasa recta
what embryological structure is an ileal diverticulum remnant of
yolk stalk
where is the ileal diverticulum located
~1m proximal to ileocecal valve
where does the colon terminate
rectum
which flexure is a more acute bend at the junction of the transverse and descending colon
Splenic
which colic flexure is generally the most superior and posterior of the flexures?
Splenic
what attaches the splenic flexure to the diaphragm?
splenocolic ligament
what opens into cecum inferior to ileocecal orifice
Veriform Appendix
mesentery that hold the appendix to the ileum
mesoappendix or triangular mesentery
blind end tube located most commonly retrocecal
Appendix
what is the function of the appendix?
not well defined or understood
what type of pain is common with inflammation of the appendix?
vague pain at the periumbilical region
where does the referred pain from inflammation of the appendix originate
T10
why does the referred pain from appendix inflammation turn into sharp pain
irritation of peritoneum of posterior abdominal wall
what vertebral level is the umbilicus located?
L4
contains stomach, liver and spleen
Supracolic compartment
contains small intestine and ascending & descending colon
Infracolic compartment
what divides the abdominal cavity into 2 compartments
Transvers mesocolon
3 smooth muscle bands paralleling length of colon
Teniae coli
outpouchings produced by teniae coli
Haustra coli