Learn the anatomy of arm muscles and the armpit with an artist-focused approach. This video breaks down muscle groups, forms, and movement in a clear, practical way, helping you draw arms that look ...

The origin is the end of a muscle which is attached to a fixed bone. The insertion is the other end of the muscle that is attached to the bone which moves. Muscular contractions are defined as the ...

The previous three articles in this series explored the form and function of muscle and, in particular, skeletal muscle. This article outlines how the contraction of muscles (outlined in part three of ...

Run a finger down the center of the forearm, curl the fingers, and flex the wrist. For many people, a thin cord jumps into ...

Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

Your paraspinal muscles are crucial to how your spine works. You can stretch regularly and strengthen these muscles to keep them working efficiently and avoid back pain. The paraspinal muscles, ...

All animals move -- cheetahs faster, snails more slowly. Muscle contractions are the basis of movement in many, but not all, species. Some animal groups don't have any muscles at all, as they branched ...

Muscular endurance refers to the ability of a muscle to sustain repeated contractions against resistance for an extended period of time. To increase muscular indurance, you should engage in activities ...