Latissimus dorsi muscle
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Latissimus Dorsi Muscle
The Latissimus Dorsi Muscle (pronounced: luh-TISS-uh-mus DOR-see), often referred to as the "lats," is one of the largest muscles in the human body.
Etymology
The term "Latissimus Dorsi" is derived from Latin, where "latissimus" means 'broadest' and "dorsi" means 'of the back'.
Anatomy
The Latissimus Dorsi Muscle is a broad, flat muscle located in the back. It extends from the lower part of the spine and hip bone, up to the upper arm bone (Humerus). It is primarily responsible for the movement of the shoulders and arms, including extension, adduction, horizontal abduction, flexion from an extended position, and (medial) internal rotation of the shoulder joint.
Related Terms
- Humerus: The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.
- Adduction: The movement of a body part toward the body's midline.
- Abduction: The movement of a body part away from the body's midline.
- Flexion: A bending movement that decreases the angle between two parts.
- Extension: A straightening movement that increases the angle between body parts.
- Internal Rotation: Rotation towards the center of the body.
See Also
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