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Synaptic Transmission

Descripción

A-Level (The Nervous System) Biology Diagrama sobre Synaptic Transmission, creado por Fauzia Ali el 06/02/2017.
Fauzia Ali
Diagrama por Fauzia Ali, actualizado hace más de 1 año
Fauzia Ali
Creado por Fauzia Ali hace alrededor de 7 años
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Resumen del Recurso

Nodos de los diagramas

  • An impulse arrives at the presynaptic knob
  • Post-synaptic membrane depolarised causing action potential
  • Voltage-dependant calcium channels open, causing influx of Ca+ ions
  • Synaptic vesicles contain acetylcholine bind to presynaptic membrane and releases neurotransmitter by exocytosis into synaptic cleft
  • Neurotransmitter diffuses to receptor on a protein on post-synaptic membrane
  • Co-operative binding on receptor: 2 receptor sites
  • Threshold reached (-55mV)
  • Channel opens and Na+ ions diffuse in
  • Acetylcholine hydrolysed or destroyed by enzyme
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