Retrieval Quiz 21

What are the three hamstring muscles?

Semimembranosus, semitendinosus, and biceps femoris

Semimembranosus

Origin: ischial tuberosity. Insertion: posterior medial condyle of tibia

Semitendinosus

Origin: ischial tuberosity. Insertion: pes anserine

Biceps Femoris

Origin: ischial tuberosity and lateral linea aspera. Insertion: head of fibula and lateral condyle of tibia

What muscles perform knee flexion?

Semimembranosus, semitendinosus, biceps femoris, gracilis, gastrocnemius, and plantaris

What muscles perform knee extension?

Sartorius, vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris

What muscles performs knee internal rotation?

Popliteus

Sartorius

Origin: anterior superior iliac spine. Insertion: pes anserine

Gracilis

Origin: symphysis and inferior ramus of pubis. Insertion: pes anserine

What are the four quadriceps muscles?

Vastus lateralis, vastus medialis, vastus intermedius, and rectus femoralis

Vastus Lateralis

Origin: lateral linea aspera. Insertion: tibial tuberosity

Vastus Medialis

Origin: medial linea aspera. Insertion: tibial tuberosity

Vastus Intermedius

Origin: anterior femur. Insertion: tibial tuberosity

Rectus Femoris

Origin: anterior inferior iliac spine. Insertion: tibial tuberosity

Gastrocnemius

Origin: posterior medial and lateral condyles of femur. Insertion: calcaneus

Popliteus

Origin: posterior lateral condyle of femur. Insertion: posterior medial condyle of tibia

Plantaris

Origin: lateral supracondylar ridge of femur. Insertion: calcaneus