Narrator: Muscles! Really? They don't look much use. When a muscle contracts (bunches up), it gets shorter and so pulls on the bone it is attached to. When a muscle relaxes, it goes back to its ...

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. Skeletal ...

The ilium can be rotated forward ... However, pseudosciatica or false sciatica can be. The muscles of the hip specifically the external rotators and abductors lay right on top of the bundle ...