What is the primary function of the latissimus dorsi muscle?

The primary function of the latissimus dorsi muscle is shoulder extension. This muscle is one of the largest in the upper body and is located primarily on the back. The latissimus dorsi plays a crucial role in a range of movements involving the shoulders and arms, especially when extending the arm backward, as seen in activities like pulling, rowing, or swimming.

Understanding the function of this muscle is important for activities that require strength and stability in the upper body. While the latissimus dorsi can also assist in movements like shoulder internal rotation and adduction, its primary role in shoulder extension makes it particularly significant in exercises that target strength and mobility in the posterior chain of the upper body.