Muscles of the Abd Wall

Question 1

Psoas Major

Answer 1

0 - transverse processes, bodies and intervertebral discs of T12-L5

I - lesser trochanter with iliacus
N - ventral primary rami of L2-L4
A - flexion of the thigh, lateral flexion of the trunk and flexion of the trunk

Question 2

Psoas Minor

Answer 2

0 - bodies of vertebrae T12 and L 1 and the disc in-between
I- pubic bone
N - ventral primary ramus L 1
A - flexion of the pelvis and vertebral column

Question 3

Iliacus

Answer 3

0 - iliac fossa
I - lesser trochanter with psoas major
N - femoral nerve
A - flexion of the thigh

Question 4

Quadratus lumborum

Answer 4

0 - iliac crest, iliolumbar ligament, and transverse processes of lower Lumbar vertebrae
I - rib 12, transverse process of upper Lumbar vertebrae
N - subcostal and upper lumbar ventral primary rami
A - flexion of the trunk laterally, extend vertebral column, elevate the hip, stabilize 12 rib against inspiration