Transcript The Nervous System

The Nervous System
2 Main Parts
•Central Nervous System
–Brain
–Spinal Cord
(click on left picture to play)
•Peripheral Nervous System
–Nerve Cells
(click on right picture to play)
Neurons
• Neurons are nerve cells that send and
receive messages from other structures in
the body.
– Sensory Neurons – Carries information
received by the senses to the central nervous
system (CNS).
– Motor Neurons – Carries information from the
CNS to muscles and glands.
Neurotransmitters
• Chemical messages
contained in sacs in
axon terminal.
• Shoots out like a
spray bottle.
• Specific types – each
fit on specific
receptors.