Kinesiology 2241A/B Lecture Notes - Lecture 20: Rectus Femoris Muscle, Biceps Femoris Muscle, Subtalar Joint

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Thomas Richard Jenkyn

Document Summary

November, 17, 2017: stand at the (cid:271)a(cid:272)k of a partner. This movement is necessary because without it, your shoulder would be prone to dislocation every time you moved your arm above your head. How could two-joint muscles be related to injuries: a whip kick in the breaststroke, Knees are internally rotating going from knee flexion into knee extension for the whip portion of the kick. (b) mounting a horse, swinging the right leg over, The two-joint muscles involved in the movements are the hamstring group, (including; semitendinosus, semimembranosus, and the long head of the biceps femoris), the sartorius and the gracilis. The rectus femoris allows the lower limb to extend the knee and flex the hip, while the hamstring group acts in the exact opposite, knee flexion and hip extension. The sartorius is responsible for externally rotating, abducting, and flexing the hip, and knee flexion. The gracilis also contributes to flexion of the knee and hip.