Lecture:muscles that cross the elbow

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Author:
julianne.elizabeth
ID:
144536
Filename:
Lecture:muscles that cross the elbow
Updated:
2012-03-29 01:07:32
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Lecture muscles that cross elbow
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Lecture:muscles that cross the elbow
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  1. Triceps Brachii
    Origin: long head: infraglenoid tubercle of scapula; lateral head: posterior shaft of humerus; medial head: posterior humeral shaft distal to radial groove

    Insertion: by common tendon into the olecranon process of ulna

    • Action: POWERFUL FOREARM EXTENSOR
  2. Anconeus
    Origin: lateral epicondyle of humerus

    Insertion: lateral aspect of olecranon process of ulna

    • Action: controls ulnar abduction during forarm pronation
  3. Bicep Brachii
    Origin: short hea: coracoid process; long head: supragelnoid cavity; tendon of long head runs within capsule and into intertubercular sulcus of humerus

    Insertion: by common tendon into radial tuberosity

    • ACTION: flexes elbow joint and supinates forearm
  4. Brachialis
    origin: front of distal humerus; embraces insertion of deltoid muscle

    • insertion: coronoid process of ulna and capsule of elbow joint
    • action: MAJOR FOREARM FLEXOR
  5. Brachioradialis
    Origin: lateral supracondylar ridge at distal end of humerus

    Insertion: base of styloid process of radius

    • action: synergist in forearm flexion

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