The Nervous System

What is the nervous system?

system which sends and receives signals/messages to the rest of the body

What are the structures of the nervous system?

cental nervous system and the peripheral nervous system

What is the basic structure of the nervous system?

neuron

What are dendrites?

Nerve fibers which carry impulses toward body of the cell

What are axons?

a nerve fiber which carries impulses away from the body of the cell

What is the myelin sheath?

What are synapses?

What are neurotransmitters?

chemical messengers at the ends of each axon which allow Nerve impulses to pass

What are Schwann cells?

type of glial cell; helps form myelin sheath around axon

What is the node of ranvier?

gaps within the myelin sheaths which increase the speed of tranmission