1. The Central Nervous System: A system that controls all of the activities of the body. .
The nerves
The brain
The spinal cord

2. IB.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 to the information

4. From brain Stem to Cerebrum

5. IA. The basic unit of the nervous system = neuron?
Dendrites receive stimuli
Nerve cell body
@ nucleus transmits the stimuli
Axon transmits the impulse away to another dendrite

7. Synapse-Junction of two neurons
Transfers the electrical nerve impulse
By chemical neuron-transmitters
From one neuron to the next across the synapse

8. IA2. Two connecting neurons:
Axon ending
Impulse direction
Dendrite of
new neuron
Axon
Cell Body

9. 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?

10. Involuntary- Reflex . . . . Use only spinal cord
Do not go to the brain
Examples:
knee jerk, eye blink,
hot stove pull back