Unit 3, Lower Limbs

Question 1

Psoas Major O, I, A, Inner.

Answer 1

O- bodies and transverse processes of lumbar vertebrae
I- lesser trochanter
A- flex thigh
Inner.- femoral n.

Question 2

Illiacus O, I, A, Inner.

Answer 2

O- Illiac fossa
I- lesser trochanter
A- flex thigh
Inner.- femoral n.

Question 3

What forms after the psoas major and illiacus go under the longitudinal ligament?

Answer 3

Iliopsoas

Question 4

Rectus Femoris O, I, A, Inner.

Answer 4

O- anterior inferior iliac spine
I- tibial tuberosity
A- extend leg, flex thigh
Inner.- femoral n.

Question 5

Vastus lateralis O, I, A, Inner.

Answer 5

O- linea aspera and greater trochanter
I- tibial tuberosity
A- extend leg
Inner.- femoral n.

Question 6

Vastus Medialis O, I, A, Inner.

Answer 6

O- Linea aspera
I- tibial tuberosity
A- extend leg
Inner.- femoral n.

Question 7

Vastus Intermedius O, I, A, Inner.

Answer 7

O- anterior and lateral shaft of femur
I- tibial tuberosity
A- extend leg
Inner.- femoral n.

Question 8

Sartorius O, I, A, Inner.

Indian Style

Answer 8

O- anterior superior iliac spine
I- medial, proximal tibia
A- flex leg, flex thigh, laterally rotate thigh
Inner.- femoral n.

Question 9

Gluteus Maximus O, I, A, Inner.

Answer 9

O- posterior ilium and sacrum
I- Gluteal tuberosity of femur, iliotibial tract
A- extend thigh, laterally rotate thigh
Inner.- Inferior gluteal n

Question 10

Tensor Fasciae Latae O, I, A, Inner.

Answer 10

O- iliac crest, anterior superior iliac spine
I- Iliotibial tract
A- abduct thigh, flex thigh
Inner.- superior gluteal n

Question 11

Gluteus Medius O, I, A, Inner.

Answer 11

O- lateral ilium
I- greater trochanter
A- Anterior fibers: flex and medially rotate thigh
Middle Fibers: abduct thigh
Posterior Fibers: extend and laterally rotate thigh
Inner.- superior gluteal n.

Question 12

Gluteus Minimus O, I, A, Inner.

Answer 12

O- lateral ilium (inferior to medius)
I- greater trochanter
A- Anterior fibers: flex and medially rotate thigh
Middle Fibers: abduct thigh
Posterior Fibers: extend and laterally rotate thigh
Inner.- superior gluteal n.

Question 13

Piriformis O, I, A, Inner.

Answer 13

O- Anterior surface of sacrum
I- greater trochanter
A- laterally rotate thigh
Inner.- S1-2 ventral rami

Question 14

Semitendinosus O, I, A, Inner.

Answer 14

O- ischial tuberosity
I- medial surface of proximal tibia
A- extend thigh, flex leg
Inner.- tibial division of sciatic n.

Question 15

Semimembranosus O, I, A, Inner.

Answer 15

O- ischial tuberosity
I- posterior surface of medial condyle of tibia
A- extend thigh, flex leg
Inner.- tibial division of sciatic n.

Question 16

Biceps Femoris:
Long Head O, I, A, Inner.
Short Head O, I, A, Inner.

Answer 16

Long Head: 
O- ischial tuberosity
I- head of fibula
A- extend thigh, flex leg
Inner.- tibial division of sciatic n.

Short Head:
O- linea aspera
I- head of fibula
A- flex leg
Inner.- common fibular division of sciatic n.

Question 17

Pectineus O, I, A, Inner.

Answer 17

O- superior pubic ramus
I- posterior femur just distal to lesser trochanter
A- adduct, flex, laterally rotate thigh
Inner.- obturator n.

Question 18

Adductor longus O, I, A, Inner.

Answer 18

O- body of pubis
I- linea aspera (distal to adductor brevis)
A- adduct, flex, laterally rotate thigh
Inner.- obturator n.

Question 19

Adductor Brevis O, I, A, Inner.

Answer 19

O- body of pubis and inferior pubic ramus
I- linea aspera (proximal to adductor longus)
A- adduct, flex, laterally rotate thigh
Inner.- obturator n.

Question 20

Gracilis O, I, A, Inner.

Answer 20

O- body of pubis and inferior pubic ramus
I- medial surface of proximal tibia
A- adduct, flex thigh, flex leg
Inner.- obturator n.

Question 21

Adductor Magnus O, I, A, Inner.

Answer 21

O- inferior pubic ramus, ischial ramus, ischial tuberosity
I- linea aspera, adductor tubercle
A- adduct thigh, extend leg
Inner.- obturator n. (adductor part), tibial n. (hamstring part)