psoas major

Question 1

psoas major shape

Answer 1

large and powerful

Question 2

psoas major origin

Answer 2

bodies and discs of vertebrae T12-L5, anterior aspect of all lumbar transverse processes

Question 3

psoas major insertion

Answer 3

lesser trochanter of femur

Question 4

psoas major direction of fibres

Answer 4

inferiorly

Question 5

psoas major actions

Answer 5

flexes hip & laterally flexes lumbar spine, working bilaterally it flexes the lumbar spine

Question 6

psoas major function

Answer 6

sitting up from a lying position

Question 7

psoas major nerve supply

Answer 7

anterior rami L1, 2, 3, 4