What is latissimus?

The latissimus dorsi, often referred to simply as the latissimus, is a large, flat muscle located in the back. It extends from the lower spine and ribs to the upper arm bone (humerus), playing a key role in movements such as pulling and lifting the arms. The latissimus dorsi is crucial for various activities, including swimming, rowing, and overhead lifting, and it contributes to the overall shape and strength of the back.