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Action at the elbow:
Flexors
- Biceps brachii
- Brachialis
- Brachioradialis
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Action at the elbow:
Extensors
- Anconeus
- Triceps brachii
- -lateral head
- -long head
- -medial head
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Pronators/supinators
- Pronator quadratus
- Pronator teres
- Supinator
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Action at the wrist:
Flexor
- Flexor carpi radialis
- Flexor carpi ulnaris
- Palmaris longus
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Action at the wrist:
Extensors
- Extensor carpi radialis longus
- Extensor carpi radialis brevis
- Extensor carpi ulnaris
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Origin and Insertion
Biceps brachii
- Origin:
- short head from the coracoid process
- long head from the supraglenoid tubercle
Insertion: radial tuberosity
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Origin and Insertion
Brachialis
- Origin: anterior, distal surface of humerus
- Insertion: ulnar tuberosity
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Origin and Insertion
Brachioradialis
- Origin:
- Ridge superior to the lateral epicondyle of humerus
- Insertion:
- Lateral aspect of styloid process of radius
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Origin and Insertion
Anconeus
- Origin: Posterior surface of lateral humerus
- Insertion: Lateral margin of olecranon and ulnar shaft
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Origin and Insertion
Triceps brachii
- Lateral head
- -Origin: superior, lateral margin of humerus
- -Insertion: olecranon of ulna
- Long Head
- -Origin: infraglenoid tubercle of scapula
- -Insertion: olecranon of ulna
- Medial Head
- -Origin: posterior surface of humerus, inferior to radial groove
- -Insertion: olecranon of ulna
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Origin and Insertion
Pronator quadratus
- Origin: anterior and medial surfaces of distal ulna
- Insertion: anterolateral surface of distal portion of radius
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Origin and Insertion
Pronator teres
- Origin: medial epicondyle of humerus and coronoid process of ulna
- Insertion: middle lateral surface of radius
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Origin and Insertion
Supinator
- Origin: lateral epicondyle of humerus and ridge near radial notch of ulna
- Insertion: anterolateral surface of radius distal to the radial tuberosity
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Origin and Insertion
Flexor carpi radialis
- Origin: medial epicondyle of humerus
- Insertion: bases of second and third metacarpal bones
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Origin and Insertion
Flexor carpi ulnaris
- Origin: medial epicondyle of humerus; adjacent medial surface of olecranon and anteriomedial portion of ulna
- Insertion: pisiform, hamate, and base of fifth metacarpal bone
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Origin and Insertion
Palmaris longus
- Origin: medial epicondyle of humerus
- Insertion: palmar aponeurosis and flexor retinaculum
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Origin and Insertion
Flexor carpi radialis/ulnaris
Palmaris longus
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Origin and Insertion
Extensor carpi radialis longus
- Origin: lateral supracondylar ridge of humerus
- Insertion: base of 2 metacarpal bone
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Origin and Insertion
Extensor carpi radialis brevis
- Origin: lateral epicondyle of humerus
- Insertion: base of 3rd metacarpal bone
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Origin and Insertion
Extensor carpi ulnaris
- Origin: lateral epicondyle of humerus; adjacent dorsal surface of ulna
- Insertion: base of 5th metacarpal bone
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Origin and insertion
Extensor carpi radialis longus
extensor carpi radialis brevis
extensor carpi ulnaris
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