The muscular system can be broken down into three types of muscles: skeletal, smooth and cardiac. The muscles in the body support movement, help maintain posture, and circulate blood and other ...

Muscles are attached to bones by tendons. Muscles contract to move our bones by pulling on them. However, muscles can only pull; they cannot push. This is why they usually work a joint in pairs. One ...

A “useless” muscle that allows some people to wiggle their ears actually activates when we strain to hear something. Our ape ancestors lost the ability to pivot their ears when they diverged from ...