Notes in Physiology::Lecture 5

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Published	02/07/2025	information flow through nervous system? {{c1::sensory receptor, afferent neuron, interneuron, efferent neuron, axon terminal (muscle, gland, or neuro…
Published	02/07/2025	information flow through neuron? {{c1::dendrites receive input, cell body "integrates" input, axon hillock "decides" whether AP is fired, axon rapidly…
Published	02/07/2025	neurons are sensitive to changes in {{c1::OXYGEN, pH, sugar, ion concentration, etc.}}
Published	02/07/2025	the {{c1::blood-brain barrier}} protects neurons from sudden changes in pH, oxygen, sugar and ion concentrations, temperature, etc. with the support o…
Published	02/07/2025	{{c1::excitable cells}} include {{c2::neurons}} and {{c2::muscle cells}} that use membrane potentials to {{c3::carry information}}
Published	02/07/2025	The biological electricity scheme is {{c1::I = g(Vm - E ion), or Current(flow of charge) = (# of channels)(Membrane potential - electrostatic equilibr…
Published	02/07/2025	{{c1::leak channels}} lead to the resting membrane potential of the cell
Published	02/07/2025	What are the approximate extracellular and intracellular Na, K, and Cl concentrations
Published	02/07/2025	The cell depolarizes by allowing {{c1::Na+}} {{c2::into}} the cell and repolarizes by allowing {{c1::K+}} {{c2::out of}} the cell.
Published	02/07/2025	Relatively little ions have to move during depolarization/repolarization, but what little concentration change happens is replenished by {{c1::Na+K+AT…
Published	02/07/2025	tingling in the feet or hands is often an early sign of neurological dysfunction because {{c1::axons are long so the distance from the cell body (sour…
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