Question

Key features of the nervous system

Answer 1

1. they help in quick action and save us from external injury.
2.they receive message by dendrites. 

Answer 2

It helps in transmitting sigals from the brain to our body and from our body to our brain. The signals jump and the nuerons pass these signals to
Important parts of nervous tissue
Axon
Node of ranvier
Neurons
Hope it helps you buddy!!