Pelvis & Thigh

Question 1

Rectus Femoris
(Quadriceps)

Answer 1

O: AIIS

I: tibial tuberosity

A: extend knee, flex hip

N: femoral L2, 3, 4

Question 2

Vastus Medialis
(Quadriceps)

Answer 2

O: medial lip of linea aspera

I: tibial tuberosity

A: extend knee

N: femoral L2, 3, 4

Question 3

Vastus Lateralis
(Quadriceps)

Answer 3

O: lateral lip of linea aspera, gluteal tuberosity, and greater trochanter

I: tibial tuberosity

A: extend knee

N: femoral L2, 3, 4

Question 4

Vastus Intermedius
(Quadriceps)

Answer 4

O: anterior and lateral shaft of femur

I: tibial tuberosity

A: extend knee

N: femoral L2, 3, 4

Question 5

Biceps Femoris
(Hamstring)

Answer 5

O: long head: ischial tuberosity
short head: lateral lip of linea aspera

I: head of fibula

A: flex knee, laterally rotate flexed knee
long head: extend hip, assist laterally rotate hip, tilt pelvis posteriorly

N: long head: sciatic (tibial branch) L5, S1, 2, 3
short head: sciatic (fibular branch) L5, S1, 2

Question 6

Semitendinosus
(Hamstring)

Answer 6

O: ischial tuberosity

I: proximal, medial shaft of tibia (pes anserine)

A: