triceps brachii muscle

Details

Instance of

class of anatomical entity, chiral muscle organ type

Subclass of

muscle of posterior compartment of arm, particular anatomical entity

Part of

muscle of posterior compartment of arm

Has parts

long head of triceps brachii

antagonist muscle

biceps brachii

arterial supply

deep brachial artery, posterior humeral circumflex artery

described by source

Gray's Anatomy (20th edition)

innervated by

axillary nerve, branch of posterior muscular branch of radial nerve to medial head of triceps brachii, branch of medial muscular branch of radial nerve to long head of triceps brachii, branch of posterior muscular branch of radial nerve to lateral head of triceps brachii

muscle action

extension of the elbow joint

muscle insertion

olecranon

muscle origin

posterior surface of humerus, anteromedial surface of humerus, Infraglenoid tubercle, medial intermuscular septum of arm, lateral intermuscular septum of arm, glenoid labrum

venous drainage

brachial veins

Authority files