Posterior Hamstring and Anterior Quadricep Groups

Question 1

Biceps Femoris

Answer 1

Origin: Long head - ischial tuberosity, short head, linea aspera of femur, lateral surface.
Insertion: Head of the fibula, lateral surfce
Action: Knee Flexion, Hip Extension
Innervation: Long head - tibial nerve, short head, common fibular nerve.

Question 2

Semitendinosus

Answer 2

Origin: Ischial Tuberosity
Insertion: Medial surface of tibia
Action: Knee Flexion
Innervation: Tibial nerve

Question 3

Semimembranosus

Answer 3

Origin: Ischial Tuberosity
Insertion: Medial condyle of tibia
Action: Knee Flexion
Innervation: Tibial nerve

Question 4

Rectus Femoris

Answer 4

Origin: AIIS (Anterior inferior iliac spine)
Insertion: Common tendon of the quadriceps to tibial tuberosity
Action: Knee extension, hip flexion
Innervation: Femoral Nerve

Question 5

Vastus Medialis

Answer 5

Origin: Intertrochanteric line of femur
Insertion: Patella via quadriceps tendon; tibial tuberosity
Action: Knee extension
Innervation: Femoral Nerve

Question 6

Vastus Lateralis

Answer 6

Origin: Greater Trochanter of femur
Insertion: Patella via quadriceps tendon; tibial tuberosity
Action: Knee extension
Innervation: Femoral Nerve

Question 7

Vastus Intermedius

Answer 7

Origin: Anterior/lateral surfaces of femur
Insertion: Common tendon of the quadriceps to tibial tuberosity
Action: Knee extension
Innervation: Femoral Nerve