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muscles

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Terms in this set (35)

  • teres major muscle

    assists the latissimus dorsi in extending, adducting, and internally rotating arm

  • rotator cuff muscles

    hold head of humerus in place in glenoid cavity so other muscles can move arm, stabilizes shoulder joint during forceful movement

  • rotator cuff 4 muscles

    teres minor , supraspinatus, infraspinatus, subscapularis

  • biceps brachii

    flexes forarm, most powerful action is supination of forearm

  • brachialis

    agonist of elbow flexion

  • brachioradials

    assists the brachialis

  • triceps brachii muscle

    lateral and medial heads extend forearm, long head plays supporting role in adducting arm, stabilizing shoulder , extend forearm

  • aconeus muscle

    assists triceps brachii in forearm extension

  • flexors that move hand and fingers

    located on anterior and medial forearm

  • extensors that move hand and fingers

    on posterior and lateral forearm

  • flexor muscles

    have superficial, intermediate, deep layers

  • flexor superficial layer

    flexor carpi radialis, palmaris longus, flexor carpi ulnaris muscles, flex the hand

  • pronator teres muscle

    pronates forearm

  • flexor intermediate layer

    flexor digitorum superficialis, flexes fingers

  • flexor deep layer (flex fingers and thumb)

    flexor digitorum profundus, flexor pollicis longus

  • flexor deep layer (pronates forearm)

    pronator quadratus muscle

  • flexor deep layer(supinates forearm)

    supinator muscle

  • extensors

    superficial and deep layers

  • extensor superficial layer (hand extensors)

    extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris

  • superficial extensors (extend fingers and thumb)

    extensor digitorum, extensor digiti minimi muscles

  • extensors deep layer (finger and thumb)

    extensor pollicis longus, extensor pollicis brevis, extensor indicis muscles

  • deep extensors (abducts thumb)

    sbductor pollicis longus muscle

  • abductor pollicis brevis

    abductsthumb

  • flexor pollicis brevis

    flexes thumb, part of thenar muscles of thumb

  • lumbricals, dorsal and palmar interossei muscles

    all move fingers

  • iliopsoas muscle

    powerful thigh flexor , formed by union of iliacus and psoas major muscles

  • psoas major muscles origin and insertion

    can switch and then it can flex trunk

  • pectineus muscle

    assists the iliopsoas in thigh flexion, assists with adduction of thigh

  • adductor magnus, adductor longus, adductor brevis

    powerful adductors of thigh

  • gracilis muscle

    adducts thigh

  • sartorius muscle

    flexion, abduction, lateral rotation of thigh and flexion of leg

  • quadriceps femoris muscle group

    four muscles converge into a common tendon called quadriceps tendon

  • quadriceps tendon

    wraps around patella, distal to patella it become patellar ligament

  • rectus femoris muscle

    extension of leg at the knee joint, thigh flexion

  • vastus lateralis, vastus intermedius and vastus medialis muscles

    all extend the leg at knee joint