Tag: Clavicular head

An estimated one-third of the pectoralis major muscle consists of the upper fibers, which are formally known as the clavicular head. This article will delve into the anatomy and function of the muscle often referred to as the upper chest, helping you understand its critical role in shoulder and arm movement.

Anatomically speaking, the pectoralis major is a large, fan-shaped muscle in the chest that is divided into distinct parts. The most superior of these segments is the **clavicular head**, which is therefore not a complete muscle in itself, but rather a crucial component of a larger muscle group.

While most people think of the chest as one solid muscle, the large pectoralis major is actually divided into three functional regions. Understanding **what are the three parts of your chest?** is key for both targeted strength training and a deeper appreciation of human anatomy.