abdominal viscera Flashcards
what is peritoneum
stretching around abdominal viscera
- serous membrane that lines the walls of the abdominal and pelvic cavities, and covers many organs
- forms a sac that encloses the peritoneal cavity
mesentery
connect parietal and visceral layers
layers of peritoneum
parietal = “of walls”
visceral = “of organs”
parietal layer
lines:
inferior surface of diaphragm
abdominal & pelvic walls
roof over pelvic viscera
visceral layer
covers organs
peritoneal cavity
has 2 sacs
greater sac
lesser sac
greater sac
diaphragm–> pelvis
lesser sac
- behind the stomach
- can extend:
upward–> diaphragm
downward–> between layers of greater omentum
left–> spleen
right–> epiploic foramen of Winslow
epiploic foramen of Winslow
only natural communication between the greater sac and lesser sac
borders of epiploic foramen of Winslow
anterior: free border of lesser omentum
posterior: inferior Vena cava
superior: liver (caudate lobe)
inferior: 1st part of duodenum
intraperitoneal
completely covered by peritoneum
- liver
- stomach
- spleen
- jejunum
- ileum
retroperitoneal
- anterior surface covered
- SAD PUCKER (organs)
SAD PUCKER
Suprarenal/ adrenal glands
Abdominal aorta and inferior vena cava
Duodenum (parts 2-4)
Pancreas
Ureters
Colon (ascending and descending)
Kidneys
Esophagus
Rectum (proximal 1/3)
double peritoneal folds
mesentery
lesser omentum
greater omentum (curtain over GI tract)
ligaments
parietal peritoneum (retroperitoneal) innervation
- segmental nerves: overlying skin & muscles (T6-L1)
- phrenic nerves
- pain is well localized
visceral peritoneum (intraperitoneal) innervation
- visceral afferents
- pain is poorly localized