Muscles Of Post Abdominal Wall

Question 0

Insertion of psoas major

Answer 0

Strong tendon to lesser trochanter of femur

Question 1

Origin of psoas manor

Answer 1

Transverse processes of lumbar vertebrae, sides of bodies of t12-s1 vertebrae and discs

Question 2

Innervation of psoas major

Answer 2

Lumbar plexus via anterior branch of nerves L2-L4

Question 3

Action of psoas major

Answer 3

Acting inferiorly with iliacus, flexes thigh, acting superiorly, flexes vertebral column laterally to balance the trunk, when sitting acts inferiorly with iliacus to flex trunk

Question 4

Origin of iliacus

Answer 4

Superior two thirds of iliac fossa, ala of sacrum, and anterior sacro-iliac ligament

Question 5

Insertion of iliacus

Answer 5

Lesser trochanter of femur and shaft inferior to it and to psoas major tendon

Question 6

Innervation of iliacus

Answer 6

Femoral nerve L2-L4

Question 7

Action of iliacus

Answer 7

Flexes thigh and stabilizes hip, acts with psoas major

Question 8

Origin of quadratus lumborum

Answer 8

Medial half of inferior border of 12th rib and tios of lumbar transverse processes

Question 9

Insertion of quadratus lumborum

Answer 9

Iliolumbar ligament and internal lip of iliac crest

Question 10

Innervation of quadratus lomborum

Answer 10

Anterior branches of T12 and L1-L4

Question 11

Action of quadratus lumborum

Answer 11

Extends and laterally flexes vertebral column, fixes 12th rib during inspriation