II. Peritoneum- serous membrane lining
the abdomen and covering abdominal organs
A. Parietal
peritoneum :
serous membrane
lining the
inner wall of
abdomen,pelvic
and scrotal
cavities
A
gut
B
B. visceral
peritoneum :
serous membrane
covering organs of
abdominal and pelvic cavities
C. connecting
peritoneum double-layered
serous membranes
A
connecting
parietal and
visceral peritoneums,
C
or between visceral
peritoneums
includes:
-- mesentaries
-- omentums
-- ligaments (falciform)
gut
B
D. peritoneal
cavity:
A
-- potential
space between
parietal and
visceral
peritoneum
-- contains no
organs
C
D
gut
B
--completely
closed in male
--open in female at oviduct
D. peritoneal cavity:
caudal reflections of peritoneum forms pouches
and fossas.
A
E
C
D
gut
B
E. retroperitoneal- term for a structure found
between peritoneum and cavity wall (thus, no
connecting peritoneum), i.e. kidney, bladder.
Also, some portions of the reproductive organs are
retroperitoneal.
E. retroperitoneal- term for a structure found
between peritoneum and cavity wall (thus, no
connecting peritoneum), i.e. kidney, bladder.
Also, some portions of the reproductive organs are
retroperitoneal.
Peritonitis:
localized or general inflammation of the
peritoneum
primary- causative agents gain access to
peritoneal cavity (i.e. ovarian bursa)
secondary - as a result of trauma (surgical
wound dehiscence, hit by car, gunshot)
The Omentum
• A double-layered connecting
peritoneum between the
stomach and abdominal organs
or abdominal wall
1- Lesser omentum
– connect lesser curvature of the
stomach and first part of
duodenum to the porta of the liver
• Gastrohepatic ligament
• Hepatoduodenal ligament
The Omentum
2- Greater omentum
– Connect the greater
curvature of the stomach to
the dorsal abdominal wall
• Superficial leaf: extend from
the stomach caudally to pelvic
inlet where it reflect and
returns cranially as the deep
leaf
• Deep leaf attaches to the
dorsal abdominal wall and
contains the left lobe of the
pancreas between its
peritoneal layers
The omentum (bovine)
– The lesser omentum arises from
the visceral surface of the liver
between the porta and the
esophageal impression and
passes to the region of the
reticular groove, the right place of
omasum , and then along the
lesser curvature of the
abomasum to the first part of the
duodenum
The omentum (bovine)
The greater omentum has two leaves
as in the other species:
• Superficial leaf arises from the left side of
the rumen and deep leaf arise from the right
side of rumen.
– Both leaves extend ventrally and to the
right,
– both leaves ascend together along the
right abdominal wall to attach to the
descending duodenum.
The omentum (bovine)
The greater omentum has two
leaves as in the other species:
– Superficial leaf: attaches the greater
curvature of the abomasum and
descending duodenum, it extends
along the ventral abdominal wall to
the left side to attach to the left
longitudinal groove of the rumen.
– Deep leaf: extends from the right
longitudinal groove of the rumen to
the descending duodenum
Omental bursa
• The omental sheets enclose a
space (omental bursa is an
important store of fat.
– It is completely divided from the
peritoneal cavity except at the
epiploic foramen (bursal foramen)
near the portal of the liver.