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Upper Limb Muscles and Their Actions - Anatomy & Physiology

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이 집합의 용어 (31)

  • Pectoralis minor

    Depression and inferior rotation of the scapula.

  • Serratus anterior

    Protraction and superior rotation of scapula; holds scapula against thoracic wall.

  • Trapezius

    Superior fibers: elevates scapula; Middle fibers: retract scapula; Inferior fibers: depress scapula.

  • Levator scapulae a

    Elevates scapula and assists pectoralis minor to inferiorly rotate scapula.

  • Rhomboids (major & minor)

    Elevate, retract, and inferiorly rotate scapula.

  • Pectoralis major

    Flexion, medial rotation, and adduction of the arm.

  • Latissimus dorsi

    Extension, adduction, and medial rotation of the arm.

  • Teres major

    Same as latissimus dorsi: extension, adduction, and medial rotation of the arm.

  • Deltoid anterior fibers

    Medial rotation and flexion of the arm.

  • Deltoid middle fibers

    Abduction of the arm.

  • Deltoid posterior fibers

    Lateral rotation and extension of the arm.

  • Supraspinatus

    Abduction of the arm.

  • Infraspinatus

    Lateral rotation of the arm.

  • Teres minor

    Lateral rotation of the arm.

  • Subscapularis

    Adduction and medial rotation of the arm.

  • Biceps brachii

    Flexion and supination of the forearm; also flexion of the arm.

  • Brachialis

    Flexion of the forearm.

  • Coracobrachialis

    Flexion and adduction of the arm.

  • Triceps brachii

    Extension of the forearm; long head also extends and adducts the arm.

  • Pronator teres

    Pronation and flexion of the forearm.

  • Flexor carpi radialis

    Flexion and abduction of the wrist.

  • Palmaris longus

    Flexion of the wrist.

  • Flexor carpi ulnaris

    Flexion and adduction of the wrist.

  • Flexor digitorum superficialis

    Flexion of the wrist and fingers (medial four digits).

  • Pronator quadratus

    Pronation of the forearm.

  • Brachioradialis

    Flexion of the forearm.

  • Extensor carpi radialis longus

    Extension and abduction of the wrist.

  • Extensor carpi radialis brevis

    Extension and abduction of the wrist.

  • Extensor digitorum

    Extension of the wrist and fingers

  • Extensor carpi ulnaris

    Extension and adduction of the wrist.

  • Supinator

    Supination of the forearm.