t
Abdominal cavity
Boundaries :
• Anterior wall =
Three
pairs of flat muscles
[ external oblique ,
internal
oblique & Trans versus abdominis ] .
°
Lateral wall =
Upper part by flat muscles .
ilia cus muscle ilium
Lower
part by
&
g hip bone .
•
Posterior wall =
Vertebral column ,
muscles and thora co -
lumbar
fascia .
•
Roof = Formed
by diaphragm
abdominal communicates
Floor No
floor cavity with
peluigan.gg
=
as
•
Nine Abdominal
Regions of Cavity
abdominal divided
.
The
cavity in into 9
regions by four imaginary
vertical two horizontal )
planes ( two & .
"'
superior horizontal plane
e)
Inferior horizontal
plane ( grater tubercular )
(3 , Right left Vertical planes
a
( Mid Iavicular planes )
Nine thus marked out
°
regions
are
arranged into three horizontal
zones :
upper ,
middle and lower -
Four
quadrants Abdominal.iq
°
7
( i
,
Right upper
a
left Upper
(3) lower
Right
141
Left Lower .
, Peritoneum
Gt membrane which the
in
large
a thin serous lines interior
•
,
abdominis
of pelvic cavity .
made
It in
tough layer of elastic tissue lined with
°
up og
a
the simple squamous epithelium forms largest
a
serous sac -
o
The
potential space in between in Peritoneal
cavity filled .
by
capillary film y fluid .
Layers
°
Two
layers :
ca , outer
parietal layer -
lines internal
surface g
abdominis
pelvic
walls
do , Inner layer forms fold
.
visceral . -
.
°
The
folds of peritoneum by which viscera are
suspended are
called
Mesentery .