Term
| Biceps Brachii (Origin, Insertion, Innervation, and Action) |
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Definition
Anterior Arm; Flexion
O: Coracoid process (Short head/more medial)and Supraglenoid tubercle (long head/more lateral)
I: Radial tuberosity and bicipital aponeurosis; attachment over common flexor tendon
N: Musculotaneous nerve
A: Flexes elbow joint and supinates forearm |
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Term
| Brachialis (Origin, Insertion, Innervation, and Action) |
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Definition
Anterior Arm; Flexion
O: Lower half of front of humerus
I: Coronoid process of ulna
N: Musculocutaneous nerve
A: Major forearm flexor |
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Term
| Brachioradialis (Origin, Insertion, Innervation, and Action) |
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Definition
Anterior Arm; Flexion (may be considered posterior forearm
O: Lateral supracondylar ridge at distal end of humerus
I: Styloid process of radius
N: Radial nerve
A: Flexes forearm |
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Term
| Triceps Brachii (Origin, Insertion, Innervation, and Action) |
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Definition
Posterior Arm; Extension
O: Infraglenoid tubercle on scapula (long head), Posterior humerus proximal to radial groove (lateral head), and Posterior humerus distal to radial groove (medial head)
I: Olecranon process of ulna
N: Radial Nerve
A: Powerful forearm extensor, long head also adducts arm and stabilizes shoulder (crosses shoulder joint) |
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Term
| Anconeus (Origin, Insertion, Innervation, and Action) |
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Definition
Posterior Arm; Extension
O: Lateral epicondyle of humerus
I: Lateral aspect of olecranon process of ulna (distal to triceps I.)
N: Radial Nerve
A: Assists triceps in elbow or forearm extension |
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Term
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Definition
Biceps Brachii, Brachialis,(both musculocutaneous nerve) and Brachioradialis (Radial Nerve);
All cross anterior elbow joint to allow flexion of forearm |
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Term
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Definition
Triceps Brachii and Anconeus (both Radial Nerve);
All cross posterior elbow joint to allow extension of forearm |
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Term
| Fundamental Movements of Elbow Joint: Flexion |
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Definition
| Biceps Brachii, Brachialis, and Brachioradialis |
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Term
| Fundamental Movements of Elbow Joint: Extension |
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Definition
| Triceps Brachii and Anconeous |
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Term
| Fundamental Movements of Elbow Joint: Supination |
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Definition
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