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HLSC 2F95 (1)
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MUSCLES.docx

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Department
Health Sciences
Course
HLSC 2F95
Professor
Andrea Josse
Semester
Winter

Description
BACK MUSCLES Latissimus dorsiAction: Adducts, extends, internally rotates, and horizontally abducts the arm Rhomboideus major Action: Adduction and downward rotation of the scapula Rhomboideus minor Action: Adduction and downward rotation of the scapula Teres minor Action: External rotation and horizontal abduction of the arm Levator scapulae Action: Extension of neck, downward rotation and elevation of the scapulae Trapezius Action: Elevates, depresses (depends on area of muscle being activated), adducts and upwardly rotates the scapulaeErector spinae Action: Extension, lateral flexion and rotation of the head and neckShoulder, Chest andArm Muscles SHOULDER, CHESTANDARM MUSCLES CHEST Pectoralis major Action: Adducts, flexes, extends (depends on fibers being recruited), internally rotates and horizontally adducts the arm Pectoralis minor Action: Depresses, protracts and downwardly rotates the scapulae DELTOID Anterior Action: Abducts, flexion, internally rotates and horizontally adducts the arm Medial Action: Abducts the arm Posterior Action: Abducts, extends, externally rotates and horizontally abducts the arm Coracobrachialis Action: Flexes and horizontally adducts the arm ROTATOR CUFF Subscapularis Action: Internally rotates the arm Infraspinatus Action: Externally rotates the arm Teres Minor Action: Externally rotates the arm Supraspinatus Action: Abduction of the arm MUSCLES OF THEARM Biceps brachii Action: Flexion of the elbow and shoulder, supination of the forearm Brachialis Action: Flexion of the elbow Pronator teres Action: Pronates the forearm Triceps brachii Action: Extends the elbow, adducts and extends the shoulder (long head) Anconeus Action: Extends the elbow Supinator Action: Supinates the forearm Pronator quadratus Action: Pronates the forearm Flexor carpi radialis Action: Flexes and abducts the wrist Flexor carpi ulnaris Action: Flexes and adducts the wrist Palmaris longus Action: Flexion of the wrist Extensor carpi radialis longus Action: Extends and adducts the wrist Extensor digitorum Action: Extends the wrist LE
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