Muscle Atlas
Triceps Brachii
Origin: Long head: infraglenoid tubercle of scapula; Lateral head: posterior surface of humerus, superior to radial groove; Medial head: posterior surface of humerus, inferior to radial groove
Insertion: Proximal end of olecranon process of ulna and fascia of forearm
Action: Chief extensor of forearm; long head steadies head of abducted humerus
Innervation: Radial nerve (C6, C7 and C8)
Arterial Supply: Branches of deep brachial artery
The medical illustrations contained in this online atlas are copyrighted © 1997 by the University of Washington. They may not be utilized, reproduced, stored, or transmitted in any form or by any means, electronic or mechanical, or by any information storage or retrieval system, without permission in writing from the University of Washington.
Receiving a license to use these images is generally quite easy, particularly for academic and scholarly purposes. For more information see the Musculoskeletal Atlas Express Licensing Page.
Insertion: Proximal end of olecranon process of ulna and fascia of forearm
Action: Chief extensor of forearm; long head steadies head of abducted humerus
Innervation: Radial nerve (C6, C7 and C8)
Arterial Supply: Branches of deep brachial artery
The medical illustrations contained in this online atlas are copyrighted © 1997 by the University of Washington. They may not be utilized, reproduced, stored, or transmitted in any form or by any means, electronic or mechanical, or by any information storage or retrieval system, without permission in writing from the University of Washington.
Receiving a license to use these images is generally quite easy, particularly for academic and scholarly purposes. For more information see the Musculoskeletal Atlas Express Licensing Page.