Brachioradialis Muscle - Attachments, Action & Innervation
Triceps Brachii Muscle: Lateral Head
The lateral head of the Triceps brachii, one of three heads of the muscle, originates from the humerus, superior to the radial groove to insert on the olecranon process.
Triceps Brachii Muscle Lateral Head Attachments: Origin and Insertion
Origin (proximal attachment)
a. Proximal portion of posterior humerus, superior to radial groove.
Insertion (distal attachment)
a. Posterior olecranon process of ulna.
Actions of the Triceps Brachii Muscle Lateral Head:
Learn the muscles of the arm faster with this step-by-step muscles of the arm and shoulder study guide.
Nerve to the Triceps Brachii muscle Lateral Head and its spinal segment:
a. Radial nerve (C7, C8).