Synaptic Potentials 1

Notes:

1) Dendrites don't contain Voltage-gated Na+ channels (can not generate Action Potential), while The Axon specially axon hillock contain the highest no. of Voltage-gated Na+ channels where as the soma contains lesser no. of these channels.

 

2) When a dendritic area gets depolarized (more +ve) the -ve ions gets attracted to this area making their area depolarized thus attracting other -ve ions and so on until this passive propagation reaches an area containing Voltage-gated Na+ channels where an adequate depolarization can generate Action Potential.

Done