Transcript The Nervous System

The Nervous
System
Video Anticipation Statements
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Pain happens only in your head.
Anyone can be hypnotized.
Nerves don’t actually touch each other.
Not feeling pain is a good thing.
Most people can get along just fine with out
senses.
• You can control your nervous system.
Challenge ?
• Are you more right-brained or more
left-brained?
• Take the Test
• Describe/diagram your results below.
Connection
• Why is it important
that reflexes occur
without thought?
Vocabulary
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Central nervous system
Peripheral nervous system
Impulse
reflex
Resources
• Video –
– Human Body: Pushing the Limits: Sensation
(open)
– Human Body: Pushing the Limits: Brain
Power(close) if time allows
• Be Nervy – Simulate nerve impulses
• Guided Notes
• Complete Objective Notes
Objectives
Notes
Describe the
peripheral
nervous system
Function of system –
(Copy & label diagram of
neuron pg. 589)
Describe the
central nervous
system (Copy & label
diagram of brain pg. 592)
> Neurons transmit information by > sensory neurons –
> motor neurons Function of system –
> Brain> cerebrum> cerebellum> medulla-
> Spinal Cord
Explain the
difference
between neurons
and nerves
Describe the peripheral nervous system
– Function of system – Collects, sends information
to and responds to information from the central
nervous systems
• Neurons transmit information by – special cells that
transfer messages (impulses)around the body by
electrical energy
• sensory neurons –collect information and send to CNS
• motor neurons – respond to information sent from CNS
Describe the central nervous system
• Function of system – Processes information sent
by the PNS
– Brain- largest organ in nervous system –mission
control
• cerebrum- stores memories, controls voluntary movement,
detects touch, light, sound, sight, odors, taste; judgment
• cerebellum- controls body position and movement
• medulla- controls most involuntary processes; life processes
– Spinal Cord – connects PNS with brain – relay;
initiates reflexes before signal can travel to brain -
Explain the difference between neurons
and nerves
• Neurons are cells that transfer electrical
impulses through out the body and nerves are
the axon parts of the neurons bundled
together with blood and connective tissue