Random Brain Facts
Random Brain Facts
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We’ve learned more
about the brain in last
20 yrs than all time
previous to that
No two brains are
identical
Brain matter is mostly
water (78%), fat
(10%), and protein
(8%)
Living brain is so soft it
can be cut w/ butter
knife---Think Hannibal
Random Brain Facts
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The adult human brain weighs
about 3 pounds (1,300-1,400 gm)
Elephant brains = 6,000gm
 Cat brains = 30 gm
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The Brain is ~2% of body weight,
but consumes ~20% of body’s
energy!
Bigger brains are not necessarily
better!
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Einstein’s was average size
Random Brain Facts
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Human brain has over100,000,000,000
neurons
If all neurons were stretched end to end,
it would reach to moon and back
Every second, brain receives 100 million
messages from the senses
¾ of body’s neurons are in brain
On the day you are born, all brain cells
are in place!!
 They’re just immature – still
developing
 Explains why we don’t have
memories until 3-4 years old
Random Brain Facts
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Changing brain:
50,000 neurons are being
formed every second during
fetal brain development!!!
The Brain is the ultimate “use it
or lose it” machine!
Computer/TV has huge impact
on brain
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Recommend no TV/internet 0-2
yrs
Random Brain Facts
Brain disorders
cost Americans
more than $600
billion a year
 Alcohol use in
teens is
devastating to
the pre-frontal
cortex!!
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Bad brain jokes
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What does a brain do when it sees a
friend across the street?
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What did the hippocampus say
during its retirement speech?
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Gives a brain wave
Thanks for the memories
What did the right hemisphere say to
the left hemisphere when they
couldn’t agree on anything?
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“let’s split”
Bad brain jokes
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When does a brain get afraid?
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Why didn’t the brain want to take a
bath?
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When it loses its nerve
It didn’t want to be brainwashed
Why was the neuron sent to the
principal’s office?
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It had trouble controlling its impulses
The Brain
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By the end of the lesson you should be
able to
Describe the structure and function of
the brain
State the function and location of all
major lobes.
State the location of sensory and motor
strip
The Brain
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“the most complex living
structure on the
universe” Society for Neuroscience
makes us who we are!!!
The Brain
Phineas gage
Parts of the cerebrum
memory game
Parts of the cerebrum
alcohol and the brain
Interactive Brain
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http://science.nationalgeographic.c
om/science/health-and-humanbody/human-body/brain-article/
Motor strip
Motor strip
Sensory homunculus
Prefrontal Development
Video—13 Min.
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http://vsx.onstreammedia.com/vsx/
pbssaf/search/PBSPlayer?assetId=6
8385&ccstart=608200&pt=0&vid=p
bssaf1302&entire=No
Half a Brain—5:30 Min
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http://vsx.onstreammedia.com/vsx/
pbssaf/search/PBSPlayer?assetId=6
8388&ccstart=2952580&pt=0&vid=
pbssaf1302&entire=No
Split Brain---10 Min.
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http://www.psychexchange.co.uk/vi
deos/view/20306/
Interactive Brain Site
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http://www.tvo.org/TVOsites/WebO
bjects/TvoMicrosite.woa?mysterieso
fthemind_interactivebrain