Nervous System

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Nervous System

• Body System
• Mrs. Pogue
• Health 1000

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How the Nervous System Works

• The nervous system _______________________________
  _________________________________

• Your nervous system is a complex network that
  allows communication between the brain and parts
  of the body.

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Nervous System

• The brain, spinal cord, and nerves work together,
  transmitting messages between organs, tissues,
  and cells.

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How the Nervous System Works

• The ____________________________ consists of the
  brain and spinal cord.
• The ____________________________ gathers
  information from inside and outside your body.

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How the Nervous System Works

• The PNS includes nerves that extend from the
  brain, spinal cord, and sensory receptors, such
  as those in the skin.
• The CNS receives messages from the nerves in the
  PNS, interprets them, and sends out a response.

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Understanding ___________

• _____________ transmit messages to and from the
  spinal cord and brain.

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Understanding Neurons
The Three Main Parts of a Neuron
____________
____________
____________
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The Brain
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Sections of the Brain
Three Main Divisions of the Brain
______________________
______________________
______________________
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The Cerebrum

• Billions of neurons in the ___________ are the
  center of conscious thought, learning, and
  memory.

_________________
The largest and most complex part of the brain
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The Cerebrum

• The cerebrums right and left sides, or
  hemispheres, communicate with each other to
  coordinate movement.
•  
• The right hemisphere controls the left side of
  the body, and the left hemisphere controls the
  right side of the body.

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The Cerebrum
Left Hemisphere
Right Hemisphere
The center for processing music and art and
comprehending spatial relationships.
The center of language, reasoning, and critical
thinking skills.
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The Cerebrum
Each hemisphere of the brain has four lobes.
________________________
Controls voluntary movements and has a role in
use of language. Possibly involved with intellect
and personality.
________________________
Involved with sensory information, including
feelings of heat, cold, pain, touch, and body
position in space.
________________________
Controls the sense of sight.
________________________
Contains the sense of hearing and smell, as well
as memory, thought, and judgment.
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The Cerebellum

• The ______________ coordinates the movement of
  skeletal muscles and maintains the bodys posture
  and balance.

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The Brain Stem

• Incoming sensory impulses and outgoing motor
  impulses pass through the ________________.

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The Brain
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The Brain Stem
Parts of the Brain Stem
The medulla oblongata
Regulates heartbeat, respiratory rate, and
reflexes such as coughing and sneezing.
Helps regulate breathing and controls the muscles
of the eyes and face.
_______________
Controls eyeball movement, pupil size, and the
reflexive response of turning your head.
The midbrain
Relays incoming sensory impulses from the eyes,
the ears, and from pressure receptors in the
skin.
The thalamus
The hypothalamus
Regulates body temperature, appetite, sleep, and
controls secretions from the pituitary gland.
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The Autonomic Nervous System
How Your Reflexes Work
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Caring for Your Nervous System
Eat a well-balanced diet Exercise regularly Get
enough sleep Wear a safety belt when in a motor
vehicle. Never dive into shallow water Wear a
helmet and other protective gear while riding a
bicycle, motorcycle, or other open vehicle, or
when enjoying a contact sport. Do not use drugs
and alcohol, which can permanently damage nerve
cells.
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Problems of the Nervous System
Headaches
Injury to the nervous system affects the
immediate tissues, and may lead to other
problems, including
Head Injuries
Spinal Injuries
_______________
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Problems of the Nervous System

• Headaches can be caused by muscle tension,
  eyestrain, exposure to fumes, a sinus infection,
  dehydration, or food allergies.
• Migraines are recurrent headaches that may be
  accompanied by sensitivity to light.

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Problems of the Nervous System
Each year, 435,000 American children and teens
sustain brain injuries.
______________
______________
______________
a temporary loss of consciousness
a bruising of the brain tissues that causes
swelling
caused by major trauma
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Problems of the Nervous System

• Meningitis is an inflammation of the spinal and
  cranial meninges caused by bacterial or viral
  infection.
• Meningitis is very serious and can result in
  death.

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Problems of the Nervous System

• Degenerative nervous system diseases occur over
  time as cells break down.

Multiple Sclerosis
Parkinsons Disease
Alzheimers
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Sources

• Glencoe Health 2009
• http//www.chirosolutions.com.au/images/ANS.gif
• http//www.mindcreators.com/Images/NB_Neuron.gif
• http//research.physics.lsa.umich.edu/zochowski/im
  ages/Neurons.jpg
• http//www.simpsonstrivia.com.ar/simpsons-photos/w
  allpapers/homer-simpson-wallpaper-brain-1024.jpg
• http//www.rainbowrehab.com/images/brain300x300.jp
  g