The Peritoneum Flashcards
what are the names for the different connections of the peritoneum between:
liver & stomach:?
stomach & apron like small intestine:?
transverse colon to posterior ab wall:?
posterior ab wall to small intestine:?
peritoneum between
liver & stomach: lessor omentum
stomach & apron like small intestine: greater omentum
transverse colon to posterior ab wall: mesocolon
posterior ab wall to small intestine: mesentary
what is the space in peritneal sac / fluid:
a) before the stomach
b) behind the stomach?
a) before the stomach: greater sac
b) behind the stomach: lesser sac
during fetal develop, the foregut, midgut and hindgut develop from what?
foregut: perotineum develops from ventral mesogastrium & dorsal mesogastrium:
i) the liver develops within the ventral mesogastrium. it exapnds
ii) dorsal mesogastrium: spleen develops in it,
get shift from
midgut & hindgut develop from dorsal mesogastrium
how does the forgut develop:
a) from the ventral mesogastrium?
b) from the dorsal mesogastrium?
which / how do the peritoneal folds form?
- *forgut development**
i) initially, the liver develops within the ventral mesogastrium. it expands rapid. moves to the right hand side. forms the falicform ligament.
ii) dorsal mesogastrium: spleen develops in it, get shift from dorsal mesogastrium to left side. other structures like stomach also move to left
as development occurs, peritoneal folds connect organs:
- falciform ligament: connects liver to anterior abdominal wall
- lesser omentum: liver & stomach
- dorsal mesogastrium forms connections between stomach & spleen, & spleen and posterior ab. wall.
- greater omentum descends into abdomen.
label the anatomy thats undergoing forgut developement at 10 weeks
get a fusion of the dorsal mesogastrium & the transverse mescolon !
& what are the two pink arrows pointing at?
- lesser omentum: liver and stomach
- gastrosplenic ligament: stomach and spleen
top pink arrow: lesser sac
bottom pink arrow: epiploic foramen
the lesser omentum runs from the .WHAT to the WHAT?
where do we find the epiploic foramen?
the lesser omentum runs from the lesser curvature of the stomach to the inferior part liver
epiploic foramen: behind the free margine of the lesser omentum
the lesser omentum is split into two different bits. name them xoxox
migdut development:
midgut development:
6 weeks: forms a looping of gut tube. projects anteriorly into umblical cord
8 weeks: once in this region, get rotation anticlockwise.
9 week: twisting and turning
11 weeks: intestine moves back into abdominal cavity & get another rotation. started developing large intestine
12 weeks: large intestine develop
WHAT IS OMPHALOCELE?
failure of central fusion at the umbilical ring = incomplete closure of the abdominal wall and persisntant herniation of the midgut
1/2000 births !
label A-E xox
A - falciform ligament
B- lesser omentum
C - greater omentum
D - mesocolon
E - mesentary
F- lesser sac
F- greater sace
what is this bit?
ligamentum teres: inferior aspect of the falciform ligament
which three strucutres do you find in the free border of the lesser omentum?
- *1. bile duct
2. hepatic artery proper
3. hepatic portal vein**
which arteries do u find in the greater omentum?
= gastroepiploic arteries
answer theses !!
- lesser sac
- structures: bile duct, hepatic artery proper, hepatic portal vein
3 blood supply: superior mesentary artery
what is peritoneal dialsysis?
= treatment for kidney failure which uses your liining of peritonemum to filter blood inside ur body
what are the potential spaces
- *subphrenic recesses:**
- divided into L&R by falciform ligament
- *subhepatic recesses:**
- lesser sac on L
- hepatorenal recesss / pouch of morrison on the R
what divides the peritoneal cavity into the supracolic and infracolic regions?
transverse mesocolon
what is this?
infracolic compartment
why are the peritoneal recesses of clinical importance?
- sites of collection of inflammatory fluid (may go undiagnose). inflammatory fluid can spread via epiploic foramen: peritonitis
-
whats the difference between primary or secondary strucutres?
give e.g.s
primary retroperitoneal srtuctures:
develop along posterior peritoneal wall & stay !
-great vessesl
- kidneys
- ureter
- lower rectum / anal canal
secondary retriperitoneal structures:
develop intrapetrioneally but move retro
- pancreas
- distal parts of duo
- upper rectum
what is ascites?
ASCITES
fluid in the cavity. This is caused by liver cirrhosis which prevents the production of albumen and so fluid leaves the vasculature et
