Posterior Abdominal Wall

Question 1

origin of psoas major

Answer 1

• transverse process body and intervertebral disc of the 12th rib
• five lumbar vertebrae

Question 2

insertion of psoas major

Answer 2

inserts on the lesser trochanter of femur

Question 3

nerve supply of psoas major

Answer 3

lumbar plexus

Question 4

action of psoas major

Answer 4

flexion in the hip joint on the lumbar spine unilateral contraction bends the trunk laterally while bilateral contraction raises the trunk from its supine position

Question 5

origin of quadrates lumborum

Answer 5

• illolumbar ligament
• iliac crest
• tip of transverse process of the lower lumbar vertebrae

Question 6

insertion of quadrates lumborum

Answer 6

inserts on the 12th rib

Question 7

never supply of quadrates lumborum

Answer 7

lumbar plexus

Question 8

action of quadrates lumborum

Answer 8

• fixes 12th rib during respiration depresses the 12th rib during forced expiration
• elevates the Ilium

Question 9

fibres of psoas muscle move

Answer 9

downwards and laterally

Question 10

psoas muscle passes

Answer 10

behind the inguinal ligament through lumbar fascia

Question 11

medial arcuate ligament

Answer 11

thickening in the fascia covering the upper part of the psoas major. It is attached to the side of the body of the first or second lumbar vertebra, laterally, it is fixed to the front of the transverse process of the first and, sometimes also, to that of the second lumbar vertebra.

Question 12

lateral arcuate ligament

Answer 12

ligament under the diaphragm that arches across the upper part of the quadratus lumborum muscle. It is traversed by the subcostal nerve, artery and vein.

Question 13

iliolumbar ligament

Answer 13

iliolumbar ligament strengthens the lumbosacral joint assisted by the lateral lumbosacral ligament and five other ligaments

Question 14

fibres of the quadrates lumborum move

Answer 14

upwards and medially

Question 15

original iliacus

Answer 15

iliac fossa

Question 16

insertion of iliacus

Answer 16

lesser trochanter of femur

Question 17

nerve supply of iliacus

Answer 17

femoral nerve

Question 18

action of iliacus

Answer 18

flexion in the hip joint on the lumbar spine unilateral contraction bends the trunk laterally while bilateral contraction raises the trunk from its supine position

Question 19

arterial supply and venous drainage of posterior abdominal wall

Answer 19

paired inferior phrenic arteries and lumbar arteries. The inferior vena cava receives the lumbar veins draining the lateral and