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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
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Brachialis
- Origin-lower half of anterior shaft of humerus
- Insertion-tuberosity of ulna, coronoid process of ulna
- Actions-elbow flexion
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Brachioradialis
- Origin-lateral supracondylar ridge of humerus
- Insertion-styloid process of radius
- Actions-elbow flexion with forearm in neutral (halfway between supination and pronation)
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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
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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
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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
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Pronator quadratus
- Origin-distal fourth of anterior ulna
- Insertion-distal fourth of anterior radius
- Actions-forearm pronation
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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)
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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)
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Palmaris Longus
- Origin-medial epicondyle of humerus (common flexor tendon)
- Insertion-palmar aponeurosis, flexor retinaculum
- Actions-assists wrist flexion
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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)
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Extensor Carpi Radialis Brevis
- Origin-lateral epicondyle of humerus (common extensor tendon)
- Insertion-base of 3rd metacarpal
- Actions-wrist extension
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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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