Muscles can only contract and relax, so they always work in pairs called antagonistic muscles. Skeletal muscle is joined to bones. Its cells contract to make bones move and joints bend.

In this video, learn about the human skeleton and how it lets us ... But bones don’t move on their own. They’re attached to muscles that pull them into different positions.

A study has demonstrated how new skeletal muscle tissues can be grown from stem cells derived from the human placenta. The results give insights into the role of a protein that is crucial for ...