Anatomy of the Urinary System

Retroperitoneal Structures (aka
Posterior Abdominal Wall)




Viscera of the posterior abdominal
wall develop from the intermediate
mesoderm (urogenital system)
⇒ They are considered primary
retroperitoneal structures




Bones
Lumber vertebrae + Sacrum

Pelvic bones

Ribs

11 and 12




Retroperitoneal Structures (aka Posterior Abdominal Wall) 1

, Muscles
Psoas major + minor

Cover the anterolateral surface
of vertebrae bodies

Fill in the space between
vertebral bodies

Go through inguinal ligament

Attached to lesser
trocnahter of femur

Iliacus

Fills the iliac fossa

Attached to lesser trochanter

Quadratus lumborum




Retroperitoneal Structures (aka Posterior Abdominal Wall) 2