Download The Nervous System

The Nervous System
Instructor: Sarah Jones
7th Grade Science
Terms to Learn
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Peripheral nervous system
Central nervous system
Neuron
Nerve
Brain
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
The Nervous System
Two Parts:
Peripheral Nervous System
Central Nervous System
Peripheral Nervous System
• The peripheral nervous system (PNS) is all of the
parts of the nervous system except for the brain and
the spinal cord.
• Two parts:
– Sensory part (sensory neurons)
– Motor part (motor neuron)
Neuroscience For Kids - Explore the nervous system
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
Peripheral Nervous System
Peripheral Nervous System Cont…
Somatic
Autonomic
• Somatic nerves are under your
control
• Autonomic nerves do not need
your conscious control.
• These are the neurons that
stimulate skeletal muscles
• Controls body functions that
you do not think about, such
as digestion and heart rate.
• Control voluntary movements,
such as writing, talking,
smiling, or jumping.
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science.
Austin : Holt, Rinehart &Winston, 2006.
– Two parts:
• Sympathetic and
parasympathetic nervous
system.
Central Nervous System
• The central nervous system (CNS) is the brain and
spinal cord.
– The Cerebrum- The largest part of your brain.
– The Cerebellum-Lies beneath the cerebrum.
– The Medulla-Connects to the spinal cord.
Your Gross and Cool Body: Nervous System
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
Central Nervous System
Central Nervous System
• Brain
– is the mass of nerve tissues that is the main control
center of the nervous system.
• Spinal Cord
– Made of neurons and bundles of axons
– Communicates with your peripheral nervous system
– Spinal cord injuries block information to and from the
brain.
A Science Odyssey: You Try It: Probe the Brain
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
Review
• What is the peripheral nervous system?
• What is the central nervous system?
IMCPL Kids' Info Guide: Nervous System
Neuron
Neuron Structure
• A neuron is a specialized nerve cell that
transfers messages in the form of fast-moving
electrical energy.
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
Nerve
Nerve Structure
• A nerve is a collection of nerve fibers (axons)
through which impulses travel between the
central nervous system and other parts of the
body.
Nervous System - Science for Kids!
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science. Austin : Holt, Rinehart &Winston, 2006.
Review
What is this?
What is this?
Activity
1.
2.
3.
4.
Sit in a chair with one arm in a
“handshake” position. Your partner
should stand facing you, holding a
meterstick vertically. The stick
should be positioned so that it will
fall between your thumb and
fingers.
Tell your partner to let go of the
meterstick without warning you.
Catch the stick between your thumb
and fingers. Your partner should
catch the meterstick if it tips over.
Record the number of centimeters
that the stick dropped before you
caught it. That distance represents
your reaction time.
Repeat steps 1-3 three times.
Calculate the average distance.
Holt, Rinehart, and Winston, inc. Holt Science &
Technology : Life Science. Austin : Holt, Rinehart
&Winston, 2006.
Concept Map
Instructor: Sarah Jones
Name: ____________________
Complete the following map by filling in the squares with the information on the powerpoint:
Topic: The Nervous System
Date: ______________
References
Holt, Rinehart, and Winston, inc. Holt Science & Technology : Life Science.
Austin : Holt, Rinehart &Winston, 2006.
Chudder, E.H. (1996-2006). Neuroscience for kids. Retrieved February 16,
2009, from http://faculty.washington.edu/chudler/introb.html
WGBH. (1998). A science odyssey. Retrieved February 16, from
http://www.pbs.org/wgbh/aso/tryit/brain/
IMCPL. (2009). IMCPL kids’ info guild : Nervous system. Retrieved February
16,2009, from
http://www.imcpl.org/kids/guides/health/nervoussystem.html
Carr, K. (1998-2007). Nervous system-Science for kids! Retrieved February 16,
2009, from
http://www.historyforkids.org/scienceforkids/biology/animals/nervous/
Discovery Communications Inc. (2000). Your gross and cool body : Nervous
system. Retrieved February 16, 2009, from
http://yucky.discovery.com/flash/body/pg000136.html