Worksheet Exercises or out-ofclass assignments, or for testing, utilize this tea

Question

Worksheet Exercises or out-ofclass assignments, or for testing, utilize this tear-out worksheet. Worksheet 2 ndicate with arrows the following movements of the knee joint. For each motion, complete the plane in which it occurs and the axis of rotation, as well as the muscles causing the moti the sen a. Flexion occurs in thegtc Frorta( plane about the accomplished by concentric contractions of the b. Extension occurs in the SCGO Ta plane about the ronmuscles axis and is accomplished by concentric contractions of the Internal rotation occurs in the axis sJerseplane about the tica c. and is accomplished by concentric contractions of the d. External rotation occurs in the plane about the eic/c axis and is accomplished by concentric contractions of the

Explanation / Answer

Flexion at the knee joint is produced by popliteus, sartorius,gracilis, semi tendinosus, semi membranosus( the hamstring muscles) Extension of the knee joint is done by the quadriceps femoris i.e. rectus femoris, Vastus lateralis, Vastus medialis, Vastus intermedius. Internal rotation is performed by 5 Muscles: semimembranosus, semitendinosus, gracilis, popliteus and sartorius. It can only be done in a flexed knee. External rotation is done by the biceps femoris

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