Excitatory synapses. The neurotransmitter at excitatory synapses depolarizes the postsynaptic membrane (of a neuron in this diagram). 1  Binding of acetylcholine to its receptors on the postsynaptic cell opens up ligand-gated sodium channels. 2  These allow an influx of Na + ions, reducing the membrane potential.xcitatory synapses. The neurotransmitter at excitatory synapses depolarizes the postsynaptic membrane (of a neuron in this diagram). 1  Binding of acetylcholine to its receptors on the postsynaptic cell opens up ligand-gated sodium channels. 2  These allow an influx of Na + ions, reducing the membrane potential.
The mophie desktop dock allows you to charge your iPhone 7/6s/6/SE/5s/5c/5 with comfort and style. Simply connect the dock to a computer or USB wall charger to create the ideal home for your iPhone when power runs low. For juice pack dock, click here.
Help for an IPhone That Will Not Charge Unless It is Turned Off Completely. The iPhone, like all smartphones and mobile devices, needs to be charged from time to time. Its battery life depends on what you use it for and how much you use it, but you should be able to rely on its ability to charge when you plug it in.attery Issues. While other smartphones allow you to remove and clean the battery, the iPhone isnât designed to be tampered with. Still, Apple maintains that the phone should charge whenever you connect that white USB cord (or plug the phone into a dock).