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
1) when an action potential occurs at a given point on a neuron membrane, voltage-gated Na+ (sodium) channels open as a wave down the length of the axon 2) the action potential at one location serves as the depolarization stimulus for the next region of the axon