MUSCLES ACTIONS, ORIGINS & INSERTIONS QUESTIONS WITH CORRECT ANSWERS

Action: flexion at elbow and shoulder, supination
Origin: coracoid process of scapula, and tubercle above the glenoid cavity of the
scapula
Insertion: tuberosity of radius


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Biceps Brachii

,Action: adducts scapula
Origin: spinous processes of vertebrae
Insertion: vertebral border of scapula


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Rhomboid Major




Action: extension at knee
Origin: greater trochanter of femur
Insertion: tibial tuberosity via patellar ligament


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Vastus Lateralis




Action: retracts and elevates upper lip
Origin: zygomatic bone
Insertion: skin on lateral sides of the mouth


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Zygomaticus




Action: flexion at knee; extension and medial rotation at hip
Origin: ischial tuberosity
Insertion: medial condyle of tibia

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Semimembranosus




Action: flexion at elbow
Origin: anterior distal humerus
Insertion: tuberosity of ulna


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Brachialis




Action: rotates head, head flexion
Origin: clavicle and manubrium of sternum
Insertion: mastoid process of temporal bone


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Sternocleidomastoid




Action: extension and lateral rotation at hip
Origin: ilium, sacrum, coccyx
Insertion: iliotibial tract and gluteal tuberosity of femur


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Gluteus Maximus