Pelvis

Question 1

Anterior tilting

Answer 1

changes in degree of lumbar lordosis

Question 2

Lateral tilting

Answer 2

changes in degree of hip abduction

Question 3

Ischiofemoral Ligament

Answer 3

reinforces fibrous capsule posteriorly from ischial portion of acetabular rim to base of greater trochanter
-resists hyperextension

Question 4

The lumbar plexus lies between:

Answer 4

-psoas major and quadratus lumborum, in psoas compartment

Question 5

Iliacus origin

Answer 5

Upper 2/3 of iliac fossa of ilium, internal lip of iliac crest, lateral aspect of sacrum, ventral sacroiliac ligament, and lower portion of iliolumbar ligament

Question 6

Iliacus insertion

Answer 6

lesser trochanter

Question 7

Iliacus action

Answer 7

flex the torso and thigh with respect to each other

also external rotation

Question 8

Iliacus innervation

Answer 8

muscular branch of femoral nerve

Question 9

Psoas major and minor origin

Answer 9

Anterior surfaces and lower borders of transverse processes of L1 - L5 and bodies and discs of T12 - L5

Question 10

Psoas major and minor insertion

Answer 10

lesser trochanter

Question 11

Psoas major and minor action

Answer 11

flex the torso and thigh with respect to each other

also external rotation

Question 12

Psoas major and minor innervation

Answer 12

direct fibers of L1-L3 lumbar plexus

Question 13

Quadratus Lumborum origin

Answer 13

iliac crest posterior inner lip

Question 14

Quadratus Lumborum insertinon

Answer 14

upper 4 lumbar vertebrae transverse processes, 12th rib lower border

Question 15

Quadratus Lumborum action

Answer 15

lateral flexion (right performs right, left performs left)

Question 16

Quadratus Lumborum innervation

Answer 16

ventral rami of 12th throacic and upper three or four lumbar spinal nerve

Question 17

Gluteus max origin

Answer 17

Posterior aspect of dorsal ilium posterior to posterior gluteal line, posterior superior iliac crest, posterior inferior aspect of sacrum and coccyx, and sacrotuberous ligament

Question 18

Gluteus max insertion

Answer 18

Primarily in fascia lata at the iliotibial band; also into the gluteal tuberosity on posterior femoral surface

Question 19

Gluteus max action

Answer 19

Major extensor of hip joint, assists in laterally rotating the thigh; upper and middle third section of the muscle are abductors

Question 20

Gluteus max innervation

Answer 20

inferior gluteal nerve

Question 21

Gluteus med origin

Answer 21

dorsal ilium inferior to iliac crest

Question 22

Gluteus med insertion

Answer 22

lateral and superior surfaces of greater trochanter

Question 23

Gluteus med action

Answer 23

Major abductor of thigh; anterior fibers help to rotate hip medially; posterior fibers help to rotate hip laterally

Question 24

Gluteus med innervation

Answer 24

superior gluteal nerve

Question 25

Gluteus min. origin

Answer 25

Dorsal ilium between inferior and anterior gluteal lines; also from edge of greater sciatic notch

Question 26

Gluteus min insertion

Answer 26

anterior surface of greater trochanter

Question 27

Gluteus min action

Answer 27

abducts and medially rotates the hip joint

Question 28

Gluteus min innveration

Answer 28

superior gluteal nerve

Question 29

Piriformis origin

Answer 29

Anterior surface of lateral process of sacrum and gluteal surface of ilium at the margin of the greater sciatic notch

Question 30

Piriformis insertion

Answer 30

superior border of greater trochanter

Question 31

Piriformis action

Answer 31

Lateral rotator of the hip joint; also helps abduct the hip if it is flexed

Question 32

Piriformis innervation

Answer 32

piriformis nerve

Question 33

Superior Gemellus origin

Answer 33

ischial spine

Question 34

Superior Gemellus insertion

Answer 34

medial surface of greater trochanter of femur, in common with obturator internus

Question 35

Superior Gemellus action

Answer 35

rotates the thigh laterally, also helps abduct the flexed thigh

Question 36

Superior Gemellus innervation

Answer 36

nerve to the obturator internus and superior gemellus

Question 37

Inferior gemellus origin

Answer 37

Posterior portions of ischial tuberosity and lateral obturator ring

Question 38

Inferior gemellus insertion

Answer 38

Medial surface of greater trochanter of femur, in common with obturator internus

Question 39

Inferior gemellus action

Answer 39

Rotates the thigh laterally; also helps abduct the flexed thigh

Question 40

Inferior gemellus innervation

Answer 40

Nerve to the obturator internus and inferior gemellus -- a branch of the sacral plexus (L5, S1)

Question 41

Obturator Internus origin

Answer 41

Internal surface of obturator membrane and posterior bony margins of obturator foramen

Question 42

Obturator Internus insertion

Answer 42

Medial surface of greater trochanter of femur, in common with superior and inferior gemelli

Question 43

Obturator internus action

Answer 43

Rotates the thigh laterally; also helps abduct the thigh when it is flexed

Question 44

Obturator internus innervation

Answer 44

Nerve to the obturator internus and superior gemellus -- a branch of the sacral plexus (L5, S1)

Question 45

Quadratus Femoris origin

Answer 45

lateral margin of obturator ring above ischial tuberosity

Question 46

Quadratus Femoris insertion

Answer 46

Quadrate tubercle and adjacent bone of intertrochanteric crest of proximal posterior femur

Question 47

Quadratus femoris action

Answer 47

rotates the hip laterally; also helps adduct the hip

Question 48

Quadratus femoris innervation

Answer 48

Quadratus femoris branch of nerve to the quadratus femoris and inferior gemellus (L5, S1)

Question 49

Obturator externus origin

Answer 49

External surface of obturator membrane and anterior bony margins of obturator foramen

Question 50

Obturator externus insertion

Answer 50

Posteromedial surface of greater trochanter of femur

Question 51

Obturator externus action

Answer 51

Rotates the thigh laterally; also helps adduct thigh

Question 52

Obturator externus innervation

Answer 52

obturator

Question 53

Femoral triangle

Answer 53

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