Nervous System.pptx - Nervous System 20 question 1 What are...

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Nervous System 20 question
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1. What are the two main divisions of the nervous system? A: Central Nervous System and Peripheral Nervous System.
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2. Name the cell of the nervous system which carries the nerve impulse/signal. A: Nerves
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3. What part of the neuron carries the nerve impulse away from the cell body? A: Motor
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4. Myelin increases or decreases (choose one) the speed of the nerve impulse conduction. A: Increase
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5. What cell in the PNS produces myelin? A: Schwann
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6. During an action potential ______ions enter the nerve cell and during repolarization ________ ions exit the nerve cell. A: k+
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7. What must the neurotransmitter released from the presynaptic membrane bind to in the postsynaptic membrane? A: The neurotransmiter must be released into the synaptic clef in response to the arrival of an action potential at the presynaptic element, or endfoot.
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8. Name the three meninges which surround and protect the brain and spinal cord.
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