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Triceps Brachii
From WikiMSK
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| Triceps Brachii | |
|---|---|
| Muscle Type | |
| Origin | Long head: Infraglenoid tubercle of the scapula
Lateral head: Lateral and proximal surface of the upper one-half of the humeral shaft above the radial groove Medial head: Distal two-thirds of the medial and proximal aspects of the humerus below the radial groove |
| Insertion | All 3 heads insert onto the olecranon process of the ulna |
| Action | |
| Synergists | |
| Antagonists | |
| Spinal innervation | C6, C7, C8 |
| Peripheral Innervation | Radial Nerve |
| Vasculature | |
Palpation
Long head: Proximal aspect is palpated as it emerges under the posterior deltoid
Lateral head: Distal to the posterior deltoid
Medial head: Distal on the posterior arm on either side of the common triceps tendon
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