The Nervous System - Ms. Sulik's Teacher page · 2020. 3. 24. · Central Nervous System •The...
Transcript of The Nervous System - Ms. Sulik's Teacher page · 2020. 3. 24. · Central Nervous System •The...
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The Nervous System
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Nervous System
• What is it?
–The system that receives,
processes, stores and
transmits information that
comes from various parts of the
body and the external world.
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Nervous System
It is composed of 2 parts:
The Central Nervous
System (CNS)
The Peripheral Nervous
System (PNS)
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Central Nervous
System• The central nervous
system is the part of
the nervous system
that is made up of
the
–the brain
–spinal cord
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The BrainThe parts of the central
nervous system located in
the cranium
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Parts of the Brain
• 3 main
parts:
• Cerebrum
• Cerebellum
• Brain stem
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Cerebrum
• Command centre
for all voluntary
movement,
interpretation of
senses, emotions
and intelligence
Parts of the Brain
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Cerebrum
In other words it is
responsible for:
Thinking
Moving
Emotions
Sensing
Parts of the Brain
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The cerebrum is
divided into the
right and left
hemisphere
The left hemisphere
controls the right side
of the body and vice
versa
Parts of the Brain
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Cerebrum
The cerebrum is made up of two
types of matter:
Parts of the Brain
Grey matter: outer layer
- Also called the cerebral
cortex
- Directs higher brain
functions like planning,
reasoning and logic
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Cerebrum
Grey matter makes up about 40% of
the brain and uses up about 94% of
available oxygen
Parts of the Brain
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Cerebrum
Parts of the Brain
•White matter:
• inner layer
• Acts as a relay between the different
brain regions
•In other words, it coordinates
communication
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Cerebrum
•White matter
makes up about
60% of the brain
Parts of the Brain
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Cerebellum
• Part of the brain that
coordinates balance
and posture (by
contracting
appropriate
muscles)
Parts of the Brain
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Brain stem (Medulla
oblongata)
• Regulates:
– breathing
– heart rate
– communication to
cerebrum
Parts of the Brain
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Parts of the Brain
Functions
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Sensory & Motor Parts of
the Cerebrum
Frontal lobe:
reasoning,
planning,
speech,
muscle control,
personality,
emotion
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Sensory & Motor Parts of
the Cerebrum
Parietal Lobe:
sensing,
interpreting
language
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Sensory & Motor Parts of
the Cerebrum
Occipital Lobe:
vision
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Sensory & Motor Parts of
the Cerebrum
Temporal Lobe:
hearing,
understanding
language,
memory storage
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More About the Brain
•Brainline– https://www.brainline.org/tbi-
basics/interactive-
brain?gclid=Cj0KEQiArou2BRDcoN_c6NDI3o
MBEiQANeix5iQSvRyqlv5JILl5Tewwqtq_z66e
pIfuzeCVpwKFnRwaAg-M8P8HAQ
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More About the Brain
•Brainwaves Centre– http://www.brainwaves.com/#parietallobe
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More About the Brain
•Brain Anatomy– https://www.mayfieldclinic.com/PE-
AnatBrain.htm