A brain is an organ that serves as the center of the nervous system in all vertebrates and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body.

Brain

by FrankJohansson

Brain

by FrankJohansson

A brain is an organ that serves as the center of the nervous system in all vertebrates and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body.

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physics