The full name for "lats" is latissimus dorsi.
The latissimus dorsi is a large, flat muscle on the back that stretches to the sides, behind the arm, and is partly covered by the trapezius on the back near the midline. It's one of the largest muscles in the back and is primarily responsible for adduction, extension, and internal rotation of the shoulder joint. It also plays a role as an accessory muscle for respiration.
Here's a more detailed breakdown:
- Location: Lower back, extending to the arm.
- Function: Primarily involved in movements of the upper extremity, including pulling motions like rowing or climbing. It is also an accessory muscle for breathing.
- Importance: Crucial for posture and a wide range of movements.
In summary, "lats" is simply the shortened, common name for the latissimus dorsi muscle.