post abdominal wall

Question 1

PA: Psoas Major

Answer 1

sides of T12-L5 vertebrate and discs between them

TP L1-L5

Question 2

DA: Psoas Major

Answer 2

lesser trochanter

Question 3

Nerve innervation of Psoas Major

Answer 3

Anterior rami of L1, L2, L3

Question 4

Muscle action of Psoas Major with origin fixed

Answer 4

HIP FLEXION
HIP LATERAL ROTATION

Question 5

Muscle action of Psoas Major with insertion fixed

Answer 5

trunk FLEXION
pelvic ANTERIOR TILT

Question 6

Muscle action of Psoas Major as a whole:

Answer 6

stabilizes hip joint when standing

Question 7

PA: Iliacus

Answer 7

iliac fossa
sacrum
anterior sacroiliac ligaments

Question 8

DA: iliacus

Answer 8

lesser trochanter
psoas tendon

Question 9

nerve innervation: Iliacus

Answer 9

Femoral nerve L2, L3, L4

Question 10

muscle action of iliacus

Answer 10

flexes thigh
stabilizes hip joint
acts with psoas major

Question 11

SA of quadratus lumborum

Answer 11

12th ribs and tips of lumbar TP

Question 12

IA: quadratus lumborum

Answer 12

iliolumbar ligament
iliac crest

Question 13

nerve of quadratus lumborum

Answer 13

ventral branches of T12, L1 to L4

Question 14

Main action of quadratus lumborum

Answer 14

Unilaterally:
laterally tilt/hike/elevate pelvis

laterally flex the trunk to the same side

extend column

Bilaterally:
fix the last rib during forced inspiration