CBP Animal 2 Nerves SOUL

CBP Animal 2 Nerves SOUL - CBP Animal 2 Nerves SOUL

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LR/CC/CBP Nervous System Essential for animal interaction with environment to obtain food Required in multicellular animals to allow cooperative action in body
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LR/CC/CBP Peripheral Nervous System = PNS Central Nervous System = CNS
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LR/CC/CBP Nervous System Perception L Sensory neuron Processing L Accessory neuron Action L Motor neuron
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LR/CC/CBP Nerve Types; Multipolar, Bipolar, Unipolar
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LR/CC/CBP
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LR/CC/CBP Types of Axon Unmyelinated Myelinated
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LR/CC/CBP
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LR/CC/CBP Nerve Impulse Electrical wave due to potential difference across plasma membrane Plasma membranes have a resting potential due to unequal concentrations of ions across the membrane ION INT EXT Na + LOW HIGH K + HIGH LOW Ca 2+ LOW HIGH
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LR/CC/CBP Action potentials Changes in ion concentrations give rise to an Action Potential, a temporary depolarization Starts when sodium channels open and allow sodium ions to flow into the cell Ends when potassium channels open and potassium flows out restoring charge balance
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LR/CC/CBP
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This note was uploaded on 07/04/2011 for the course BIO microbiolo taught by Professor Point during the Spring '09 term at HKU.

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CBP Animal 2 Nerves SOUL - CBP Animal 2 Nerves SOUL

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