Anatomy of the Kidney Practical

Question 1

Innervation of

• psoas major
• iliacus
• quadratus lumborum

Answer 1

• psoas major: anterior rami of lumbar L1,L2,L3
• iliacus: femoral nerves L2-L4
• quadratus lumborum: anterior branches of T12 and L1-L4 nerves

Question 2

Action of

• psoas major
• iliacus
• quadratus lumborum

Answer 2

• psoas major: acting inferiorly with iliacus, it flexes thigh. acting superiorly it flexes vertebral column laterally
• iliacus: flexes thigh, and stabilizes hip joint, acts with psoas major
• quadratus lumborum: extends and laterally flexes vertebral column. fixes 12th rib during inspiration