What is the triceps -Learn the anatomy and function of the triceps muscle.

So what is the triceps ? What is its anatomy and function ? Triceps is one of the extensors of the forearm. Its main role is to move the forearm away from the upper arm i.e. extension. Triceps originates from three heads i.e. The long head – long head makes up most of the mass […]

So what is the triceps ? What is its anatomy and function ?

Triceps is one of the extensors of the forearm. Its main role is to move the forearm away from the upper arm i.e. extension.

Triceps originates from three heads i.e.

  1. The long head – long head makes up most of the mass of the triceps
  2. The lateral head- is the most visible from the side
  3. The Medial head- least visible but overall most important for the stability and strength of the muscle
Triceps
triceps
triceps

Triceps aka triceps brachii (Latin for “three-headed muscle of the arm”) arises via three tendons from the scapula and humerus. The long head arises from the infra glenoid tubercle. The lateral and medial heads arise from the humerus bone.

The muscle then inserts onto the olecranon process of the ulna bone.

Triceps is the major extensor of the elbow joint, unlike the biceps which are helped by two other muscles. It is only helped by a small triangular muscle called the anconeus. But anconeus is only present in a few people and it has a very limited role in extension.

As it is the only extensor of the arm nature has provided it with three heads in case anyone ruptures.

It is the big bulky muscle at the back of the arm and makes up most of the chunk of the arm width. It is a voluntary striated muscle under conscious control. Triceps is supplied by the brachial artery and the radial nerve.

To study the various muscles of the arm and their functions it is a good idea to look at them in a photograph or a 3D atlas to better visualize the various contours of the muscles. It is recommended to always study muscles by visualizing the body in the anatomical position.

Learn more here.

Learn more about other muscles.

Leave a Reply