how reflex works
DESCRIPTION
Short presentation on how reflex worksTRANSCRIPT
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Automatic moves(How reflex works)
Caisar Oentoro113090064 / IF-33-05
13-12-2010
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What is reflex?• Reflex is involuntary fast reaction by our
nervous systems.
• They active our muscles in situations where our brain would take too long to react and protecting us from external danger
Purpose/functions
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2 Kinds of body movements• VOLUNTARY MOVEMENT: You realized it
then you do it.• INVOLUNTARY MOVEMENT: You do it
then you realize it.
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Voluntary movement• Voluntary movements occur in response to
messages from the brain, for example turning the button of the stove.
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Voluntary movement mechanisms
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Involuntary movement• An automatic action. The body moves in
response to stimulus.
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Involuntary movements
• And this is carried out even before the brain has become aware of it
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Involuntary movements mechanism
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Involuntary movements mechanism
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Involuntary movements mechanism
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Involuntary movements mechanism
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Summarize• How reflex works:
• It received stimulus from outside of our body.• The stimulus signal then transmitted to spinal
cord via sensory neuron• Spinal cord then send back signal to the
muscle(via motor neuron) to move automatically.
• At the same time spinal cord send signal to the brain to be processed, and finally we realize our reflex movements
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THAT’S ALL
THANK YOU FOR YOUR ATTENTION
WASSALAMMUALAIKUM, WR, WB
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SOURCES:• Microsoft Student with Encarta 2009 DVD,
How Reflex Works