We know that the sum of the measures of any triangle is 180 degrees. Using the fact that angle A + angle B + angle C = 180 degrees, we can find the measure of angle C. angle A = 40. angle B = 60. angle C = we don't know.
When a depolarization wave reaches the synaptic end bulb of a presynaptic neuron, the NEXT event is diffusion of calcium ions into the cell A neurotransmitter that allows sodium ions to leak into a postsynaptic neuron causes
Upon stimulation, the axon membrane admits more sodium ions, rendering the neuron more positively charged. When the neuron reaches a certain point of depolarization known as the action potential threshold, it will fire; if it does not reach that point, it will not fire. The action potential of a neuron is always the same.