The visual system is the part of the central nervous system that is required for visual perception – receiving, processing and interpreting visual information to build a representation of the visual ...

The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. The proper functioning of these nerves ensures that ...

Narrator: Serious scientists, like myself, believe our Solar System was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun. Eight planets ...