# What is the triceps called?

It is called the triceps brachii. Gray's Anatomy (1918) describes it as a three-headed muscle on the back of the upper arm.

## What it means

- A three-headed muscle on the back of the upper arm.
- One head arises from the scapula and two from the humerus.
- Straightens the elbow.

## Action steps

1. On the back of the upper arm.
2. Between the shoulder and the elbow.
3. Inserts by a broad tendon into the olecranon of the ulna.

## Sources

- [Gray's Anatomy of the Human Body (1918)](https://www.bartleby.com/107/)

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