AP propagation

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Jessica

Reino Unido

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1	Anónimo 2 de Agosto de 2026	% 60	04:44

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Completar Frases AP propagationVersión en línea Fill in the blanks por Jessica 1 Action potentials are initiated at the ( AIS ) , where there is a high density of - gated channels . Depolarisation of the AIS that reaches triggers these channels to , producing the phase of the action potential . 2 Once initiated , the action potential propagates along the . Depolarisation of one segment triggers the of - gated channels in the next segment , allowing ions to flow and depolarise the membrane . - gated channels slightly later , causing and restoration of the membrane potential locally . The of sodium channels behind the potential ensures propagation . 3 Conduction velocity is affected by axon , with diameters reducing internal resistance , and by the extent of myelination . Finally , periods limit how often action potentials can occur and prevent propagation , with the refractory period preventing any new AP and the refractory period allowing APs only if a stimulus occurs .