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triceps brachii (muscle)

 

Definition: three-headed muscle of posterior (extensor) compartment of arm; origin, long or scapular head: lateral border of scapula below glenoid fossa, lateral head: lateral and posterior surface of humerus below greater tubercle, medial head: posterior surface of humerus below radial groove; insertion, olecranon of ulna; action, extends elbow; nerve supply, radial.

Synonym(s): musculus triceps brachiiTA, triceps muscle of arm

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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