1. Nervous System
Introduction

2. What is the function of the Nervous System
To receive information from a sensory neuron
To process info. by the brain & spinal cord
To respond by an effectors (muscle/gland)

3. Basic Anatomy Dendrites receive stimuli Nerve cell body
@ nucleus transmits the stimuli
Axon transmits the impulse to another dendrite
Neuron Anatomy

4. Axon ending: terminal bud
Transfers the electrical nerve impulse
By chemical neuron-transmitters
From one neuron to the next
Cells/Nervous System/Explore the Nervous System/Neuron/Gallery of Neurons/gall1.html

5. Sensory neurons or“receptors” receive a stimulus from:
ears - hearing
nose - smell
skin - touch
mouth - taste
eyes - sight

6. Review What is the name of the nerve cell ?
Does the stimulus travel one- way or down the neuron in two directions?
Which part receives the stimuli? (The synapse, dendrites, cell body, or axon)
Which is covered by a myelin sheath ?
What is the purpose of the myelin sheath?