Page 3 - Lesson Notes

Neuron:
 Cells of the nervous tissue are called neurons.

 Neurons vary in size, shape, and structure depending on their role and
location.

 All neurons have three essential parts: a cell body, an axon, and dendrites.

1. Dendrites

These are small branch-like structures that receive messages from other
neurons and allow the transmission of messages to the cell body.

2. Cell Body
Each neuron has a cell body with a nucleus, golgi body, endoplasmic

reticulum, mitochondria and other components.

3. Axon
Axon is a tube-like structure that carries electrical impulse from the cell body

to the axon terminals that passes the impulse to another neuron.
 Synapse

It is the chemical junction between the terminal of one neuron and dendrites

of another neuron.