The system that can sense changes both inside and outside the body

Axons are covered by a sheath called 

The structures of neurons that are arranged in the form of a tree with branches

The system that can sense changes only inside the body is 

Cell body is also called

The parts of neuron that transmit information to cyton are

Nissl granules occurs in 

Nerves that carry impulses from sense organs to brain or spinal cord are 

Neurons receive nutrients from 

Efferent nerves are also called