MUSCLES OF THE PELVIS

Question 1

what are the muscles of the pelvis?

Answer 1

iliacus m

psoas m

Question 2

iliacus m. origin

Answer 2

superior iliac fossa (superior 2/3 and inner lip of

the iliac crest)

Question 3

iliacus m. insertion

Answer 3

lesser trochanter of the
femur

- travels inferiorly and
passes anteriorly over the
hip joint and through the
muscular lacuna at the
base of the femoral
triangle to its insertion

Question 4

iliacus m. action

Answer 4

flexes the thigh

Question 5

iliacus m. arterial supply

Answer 5

muscular branches of
common, internal and
external iliac arteries

Question 6

iliacus m. inervation

Answer 6

femoral nerve: from dorsal
divisions of ventral rami L-2,
L-3, L-4

Question 7

psoas major m. origin

Answer 7

T-12 through L-5 vertebrae (bodies, intervertebral

discs and transverse processes)

Question 8

psoas major m. insertion

Answer 8

lesser trochanter of the
femur

- travels inferolaterally,
joins the tendon of iliacus
muscle and passes anterior
to the hip joint and
through the muscular
lacuna at the base of the
femoral triangle to its
insertion

Question 9

psoas major m. action

Answer 9

flexes the thigh

Question 10

psoas major m. arterial supply

Answer 10

muscular branches from the
aorta and the common iliac
arteries

Question 11

psoas major m. innervation

Answer 11

ventral rami L-1, L-2, L-3, as

branches exit spinal canal