Muscles of the Posterior Abdominal Wall Flashcards by Nathan Mulroy | Brainscape

Q

Psoas Major

A

Origin: bodies of lumbar vertebrae

Insertion: lesser trochanter of femur

Innervation: L1-L3 ventral rami

Action: flexion of the hip

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Q

Psoas Minor

A

Origin: bodies of lumbar vertebrae

Insertion: pectineal line

Innervation: lumbar plexus

Action: weak flexion of the vertebral column

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Q

Quadratus Lumborum

A

Origin: 12th rib

Insertion: iliac crest

Innervation: lumbar plexus

Action: stabilize rib 12 and lateral bending of trunk

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Q

Iliacus

A

Origin: iliac fossa

Insertion: lesser trochanter of femur

Innervation: femoral n. (L2-L4)

Action: flexion of the hip

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