Action Potentials
To fire a signal, the membrane potential must hit this "magic number" (usually -55mV).
What is Threshold?
Most brain tumors are caused by mutations in these cells, not neurons.
What is Glia?
This ion rushes into the axon terminal to trigger the release of neurotransmitters.
What is Calcium?
This period prevents a signal from traveling backward up the axon.
What is the Refractory Period?
These glial cells produce the cerebrospinal fluid (CSF) that cushions the brain.
What are Ependymal cells?
When multiple signals arrive at a neuron at the exact same time to trigger a fire.
What is Spatial Summation?