Skeletal muscle is joined to bones. Its cells contract to make bones move and joints bend. Skeletal muscles always come in pairs, just like trainers. But there is a little bit more to it than that.

Specialised animal cells include red blood cells, sperm, eggs, nerve cells, muscle cells, ciliated cells, and villi. Get it, lark? Anyone…? Okay let's move on. An animal cell is made of three ...