08-01 URI Gx Urinary System and Retroperitoneal Organs Flashcards
CAVITIES of Retroperitoneum
- Dorsal (posterior): cranial, spinal
- Ventral (anterior): thoracic, abdominal, pelvic cavity. (abdominopelvic cavity [in females])
enclosed by peritoneum; within the peritoneal cavity
Intraperitoneal
covered by peritoneum ANTERIORLY
retroperitoneal
anatomical space behind the peritoneum
retroperitoneum
subdivisions of the retroperitoneum (based on kidneys)
- Anterior Pararenal Space (APS)
- Perirenal Space (PS)
- Posterior Pararenal Space (PPS)
Borders of Anterior Pararenal Space
- Parietal peritoneum (anteriorly)
- Anterior portion of renal fascia (posteriorly)
Contents of Anterior Pararenal Space
- Pancreas
- Colon
- Duodenum
(mnemonic: Pussy Cat Dolls)
Borders of Perirenal Space
Anterior and Posterior portion of the renal fascia
Contents of Perirenal Space
- Kidneys
- Renal vessels
- Ureter
Borders of Posterior Pararenal Space
- posterior portion of renal fascia (anteriorly)
- posterior abdominal wall muscles (posteriorly)
Contents of Posterior Pararenal Space
-fat
Potential Spaces in the Retroperitoneum
Retromesenteric Space (RMP) Retrorenal Space (RRS)
potential space between APS and PS
Retromesenteric Space (RMP)
potential space between PS and PPS
Retrorenal Space (RRS)
PERITONEAL ORGANS
(mnemonic: SAD PUCKER)
Suprarenal gland Aorta/IVC Duodenum (descending and horizontal portion) Pancreas (head, neck and body) Ureter Colon (ascending and descending) Kidneys Esophagus Rectum
SECONDARY REROPERITONEAL ORGANS
- Pancreas
- Colon
- Duodenum
(mnemonic: Pussy Cat Dolls)
Muscles of Posterior Abdominal Wall
- Psoas Major
- Psoas Minor
- Quadratus Lumborum
- Iliacus
origin of psoas minor
T12-L1
insertion of psoas minor
pectineal line;
ilipubic eminence
innervation of psoas minor
anterior rami of L1
main action of psoas minor
weak flexion of lumbar vertebra
3 largest branches of the lumbar plexus
femoral nerve,
obturator nerve,
lumbosacral trunk
composed of T12 (subcostal nerve) and L1-L5 (ventral rami)
Lumbar Plexus
(lumbar plexus) arises from L2-L4
femoral nerve and
obturator nerve