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- Electrical_excitability abstract "Electrical excitability refers to the capacity of nerves and other tissues to generate and sometimes propagate action potentials, in other words, signals that serve to control intracellular processes, such as muscle contraction, synaptic transmitter release or hormone secretion. The nervous system enables animals to receive and act on internal and external stimuli with speed and in a coordinated manner. Activity of the nervous system is reflected in a variety of electrical and chemical signals that arise in the receptor organs, the nerve cellsو and the effector organs, including the muscles and secretory glands. The properties of almost all cells are the formation of a reposing membrane potential and its dependence on ion gradients and ion permeability. The distinctive feature of electrically excitable cells is their response to membrane depolarization. Whereas a nonexcitable cell that has been slightly depolarized will return to its original resting membrane potential, and electrically excitable cell that is depolarized to the same degree will respond with an action potential. Electrically excitable cells produce an action potential because of the presence of voltage-gated channels in the plasma membrane. In order to conceive how nerve cells communicate signals electrically, one needs to understand the characteristics of the ion channels in the nerve cell membrane.".
- Electrical_excitability thumbnail Action_potential_propagation_animation.gif?width=300.
- Electrical_excitability wikiPageID "48792977".
- Electrical_excitability wikiPageLength "8134".
- Electrical_excitability wikiPageOutDegree "27".
- Electrical_excitability wikiPageRevisionID "697968908".
- Electrical_excitability wikiPageWikiLink Action_potential.
- Electrical_excitability wikiPageWikiLink Category:Neuroscience.
- Electrical_excitability wikiPageWikiLink Depolarization.
- Electrical_excitability wikiPageWikiLink Ligand-gated_ion_channel.
- Electrical_excitability wikiPageWikiLink K+-ATPase.
- Electrical_excitability wikiPageWikiLink Patch_clamp.
- Electrical_excitability wikiPageWikiLink Pipette.
- Electrical_excitability wikiPageWikiLink Protease.
- Electrical_excitability wikiPageWikiLink Sodium-calcium_exchanger.
- Electrical_excitability wikiPageWikiLink Sodium-glucose_transport_proteins.
- Electrical_excitability wikiPageWikiLink Voltage-gated_ion_channel.
- Electrical_excitability wikiPageWikiLink Voltage_clamp.
- Electrical_excitability wikiPageWikiLink File:Action_potential_propagation_animation.gif.
- Electrical_excitability wikiPageWikiLink File:CFTR.jpg.
- Electrical_excitability wikiPageWikiLink File:Membrane_potential_ions_(id).jpg.
- Electrical_excitability wikiPageWikiLink File:Patchmodes-de.svg.
- Electrical_excitability wikiPageWikiLinkText "electrical excitability".
- Electrical_excitability wikiPageUsesTemplate Template:Reflist.
- Electrical_excitability subject Category:Neuroscience.
- Electrical_excitability comment "Electrical excitability refers to the capacity of nerves and other tissues to generate and sometimes propagate action potentials, in other words, signals that serve to control intracellular processes, such as muscle contraction, synaptic transmitter release or hormone secretion. The nervous system enables animals to receive and act on internal and external stimuli with speed and in a coordinated manner.".
- Electrical_excitability label "Electrical excitability".
- Electrical_excitability wasDerivedFrom Electrical_excitability?oldid=697968908.
- Electrical_excitability depiction Action_potential_propagation_animation.gif.
- Electrical_excitability isPrimaryTopicOf Electrical_excitability.