Only the brain will have brain tissue
The nervous system conducts electrical signals from one structure to another. For example from the brain to the muscles for movement.
Nerves transmits messages back and forth from the brain to the other parts of the body.
Brain tissue
Any tissue except the heart tissue and brain tissue.
Most Complex Structure in the Universe is Your Brain
nerve tissue
nerve tissue
nerve tissue
nervous tissue
It can be called brain tissue, cerebral tissue or neural tissue (although the latter phrase can refer to nerve tissue anywhere in the body, and not just in the brain).
your brain tissue
The most complex tissue in the body is the musle.