ELBOW AND WRIST MUSCLES

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Author:
sandykillian
ID:
115785
Filename:
ELBOW AND WRIST MUSCLES
Updated:
2012-01-03 16:44:51
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ELBOW WRIST MUSCLES
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ELBOW AND WRIST MUSCLES
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  1. Biceps Brachii
    • Origin-short head-coracoid process of scapula, long head-supraglenoid tubercle of scapula
    • Insertion-tuberosity of radius, bicipital aponeurosis
    • Actions-elbow flexion, forearm supination, short head-shoulder flexion
  2. Brachialis
    • Origin-lower half of anterior shaft of humerus
    • Insertion-tuberosity of ulna, coronoid process of ulna
    • Actions-elbow flexion
  3. Brachioradialis
    • Origin-lateral supracondylar ridge of humerus
    • Insertion-styloid process of radius
    • Actions-elbow flexion with forearm in neutral (halfway between supination and pronation)
  4. Triceps Brachii
    • Origin-long head-infraglenoid tubercle of scapula, lateral head-posterior humerus above spiral groove, medial head-posterior humerus below spiral groove
    • Insertion-olecranon process of ulna
    • Actions-elbow extension, long head-shoulder extension
  5. Supinator
    • Origin-lateral epicondyle of humerus, annular ligament of radius, radial collateral ligaments, proximal ulna at supinator crest
    • Insertion-lateral surface of proximal 1/3 of radius between anterior and posterior oblique lines
    • Actions-forearm supination
  6. Pronator Teres
    • Origin-humeral head-medial epicondyle of humerus, ulnar head-coronoid process of ulna
    • Insertion-middle of lateral shaft of radius
    • Actions-forearm pronation, assists in elbow flexion
  7. Pronator quadratus
    • Origin-distal fourth of anterior ulna
    • Insertion-distal fourth of anterior radius
    • Actions-forearm pronation
  8. Flexor Carpi Radialis
    • Origin-medial epicondyle of humerus (common flexor tendon)
    • Insertion-bases of 2nd and 3rd metacarpals
    • Actions-wrist flexion, wrist abd (radial deviation)
  9. Flexor Carpi Ulnaris
    • Origin-humeral head-medial epicondyle of humerus (common flexor tendon), ulnar head-proximal posterior ulna, olecranon process
    • Insertion-base of 5th metacarpal, pisiform and hamate carpal bones
    • Actions-wrist flexion, wrist add (ulnar deviation)
  10. Palmaris Longus
    • Origin-medial epicondyle of humerus (common flexor tendon)
    • Insertion-palmar aponeurosis, flexor retinaculum
    • Actions-assists wrist flexion
  11. Extensor Carpi Radialis Longus
    • Origin-lateral supracondylar ridge of humerus, lateral epicondyle of humerus
    • Insertion-base of 2nd metacarpal
    • Actions-wrist extension, wrist abd (radial deviation)
  12. Extensor Carpi Radialis Brevis
    • Origin-lateral epicondyle of humerus (common extensor tendon)
    • Insertion-base of 3rd metacarpal
    • Actions-wrist extension
  13. Extensor Carpi Ulnaris
    • Origin-humeral head-lateral epicondyle of humerus (common extensor tendon), ulnar head (deep to humeral head)-posterior proximal ulna-subcutaneous border
    • Insertion-base of 5th metacarpal
    • Actions-wrist extension, wrist add (ulnar deviation)

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