Origin, Insertion and actions for the muscles that cross the knee
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Tensor Fasciae Latae | Iliac Crest | Iliotibial tract (lateral condyle of tibia | assists in abduction, medial rotation and flexion of femur at hip and knee extension
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| Sartorius | Anterior superior iliac spine | upper medial shaft of tibia | assists flexion, abduction, and lateral rotation of femur at hip and assists in flexion and medial rotation of knee
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| Rectus Femoris | Anterior inferior iliac spine and illium at upper rim of acetabulum | Patella (and tibal tuberosity via patella ligament) | Extension of knee and assists flexion of femur at hip
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| Vastus Medialis | linea aspera on posterior femur | Patella (tibial tuberosity via patellar ligament) | Extension of knee
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| Vastus Lateralis | linea aspera on posterior femur and greater trochanter of femur | Patella (tibial tuberosity via patellar ligament) | Extension of knee
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| Vastus Intermedius | anterior and lateral femoral shaft | Patella (tibial tuberosity via patellar ligament) | Extension of knee
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| Gracilis | Inferior ramus of anterior pubis | medial proximal tibia | adduction of femur at hip and assists in knee flexion and medial rotation of flexed knee
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| Biceps Femoris | Long head: ischial tuberosity Short Head: linea aspera | Head of fibula (lateral) | Long head: extension of hip Both Heads: flexion of knee and lateral rotation of flexed knee
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| Semitendinosus | Ischial tuberosity | anterior proximal tibial shaft | extension of hip, flexion of knee and medial rotation of flexed knee
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| Semimembranousus | Ischial tuberosity | posterior medial tibal condyle | extension of hip, flexion of knee and medial rotation of flexed knee
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| Gastrocnemius | Medial Head: medial epicondyle of femur Lateral Head: lateral epicondyle of femur | calcaneus via tendo achilles | plantarflexion of ankle or assists knee flexion
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| Popliteus | Lateral condyle of femur | Posterior proximal tibial shaft | initiates knee flexion by medial rotation of the tibia to unlock the extended knee
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Created by:
Shell1673
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