Lateral Flexion of Spine

Question 1

Quadratus lumborum (origin)

Answer 1

medial 1/2 of inferior border of 12th ribs, tips of lumbar transverse processes

Question 2

Quadratus lumborum (insertion)

Answer 2

iliolumbar ligament, internal lip of iliac crest

Question 3

Quadratus lumborum (action)

Answer 3

extends and laterally flexes vertebral column, flexes 12th rib during inspiration

Question 4

Quadratus lumborum (innervation)

Answer 4

ventral rami (T12), lumbar nerves (L1 - L4)

Question 5

Quadratus lumborum (blood supply)

Answer 5

iliolumbar artery

Question 6

Iliocostal lumborum (origin)

Answer 6

iliac crest, sacrum

Question 7

Iliocostal lumborum (insertion)

Answer 7

angles of lower ribs

Question 8

Iliocostal lumborum (action)

Answer 8

extends and laterally bends vertebral column

Question 9

Iliocostal lumborum (innervation)

Answer 9

dorsal rami

Question 10

Iliocostal lumborum (blood supply)

Answer 10

dorsal branches of lumbar arteries