Muscle Origins and Insertions - Set 3

Answer
1.Origin: Lateral epicondyle of humerus
Insertion: Base of fifth metacarpal
Action: Extends and adducts hand at the wrist
2.Origin: Medial epicondyle of humerus
Insertion: Base of second and third metacarpals
Action: Flexes and abducts hand at the wrist
3.Origin: Iliac crest, sacrum, coccyx
Insertion: Iliotibial tract, linea aspera (femur)
Action: Extension and lateral rotation of the thigh at the hip
4.Origin: Lateral surface of ilium
Insertion: Greater trochanter (femur)
Action: Abduction and medial rotation of the thigh at the hip
5.Origin: Iliac crest
Insertion: Greater trochanter (femur)
Action: Abduction and medial rotation of the thigh at the hip
6.Origin: Ischial tuberosity
Insertion: Medial condyle of tibia
Action: Flexes leg at the knee
7.Origin: Ischial tuberosity
Insertion: Superomedial surface of tibia (via pes anserinus)
Action: Flexes leg at the knee
8.Origin: Ischial tuberosity
Insertion: Lateral condyle of tibia
Action: Flexes leg at the knee
9.Origin: Linea aspera
Insertion: Lateral condyle of tibia
Action: Flexes leg at the knee
10.Origin: Anterior superior iliac spine
Insertion: Superomedial surface of tibia (via pes anserinus)
Action: Flexes and laterally rotates thigh at the hip; flexes leg at the knee