Nervous_System - Nervous System Chapter 4 Danilo Franco DVM...

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Nervous System Chapter 4 Danilo Franco, DVM, PhD
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Nervous System (NS) Structure of the NS (Neurons, Synapses, Glial cells, Myelin) Organization CNS, PNS, ANS Nerve Impulse and Transmission Mechanism of Transmission, Neurotransmitters, Neuron Placement Reflexes Spinal, Somatic and Visceral reflexes, Reflex Centers, Postural reflexes and reactions Meninges and Cerebrospinal fluid (CSF) Brain, Spinal cord, Ventricles, Circulation and function of CSF Central Nervous System Metabolism Blood-Brain Barrier, Blood requirement
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Nervous System Main communication network to adjust for changes of Internal and External environments. Sensory (Perceive Changes) Integration (process information) Storage (Memory) Response (Motor).
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Na channel K channel Cl channel Na + K + Cl - ICF ECF MEMB - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + + Chemical Gradient Electrical Gradient -90mV Electrical and Chemical Gradient -70mV Resting Membrane Potential (K + ) 140mEq/L (K + ) 5mEq/L (Na + ) 10 mEq/L (Na + ) 140 mEq/L Na/K ATPase Pump ATP ADP + Pi 3Na + 2K + Prot - Prot - Prot - Prot - Leaking K + out and Na + into the Cell
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Establishment of a resting membrane potential
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A. Phases of the Action Potential B. Relative Membrane Permeability
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The Neuron Polarity (# poles or processes)
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