w6 l4 Muscle Movement Tutorial 08

w6 l4 Muscle Movement Tutorial 08 - Muscle Movement - How...

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Muscle Movement - How does it happen? What makes a muscle contract when you want it to? Think about moving – planning the movement: this is called intentional or volitional movement. This planning occurs in the cortex of the brain, but where? A message is then sent to an other group of neurons in the cortex of the brain which will send the specific movement message. These are called upper motor neurons. Were are they located?
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Where will the nerve fibers from the upper motor neurons end? How is the place or area of the body where they end determined? (think homunculus)
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This message is sent down a group of nerve fibers (this is an Action Potential – AP) which arise from a specific area of the homunculus. What is the name for a group of nerve fibers in the central nervous system? What is the name of this specific group of fibers that delivers a message about intentional movement?
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If the movement is to be in the head or neck, were will the nerve fibers in the tract end? If the movement is to be in the body, where will the nerve fibers in the
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w6 l4 Muscle Movement Tutorial 08 - Muscle Movement - How...

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