Which of the following is NOT true of neural impulses?
A) The incoming message must be above a certain threshold to cause a neural impulse.
B) The neuron fires in response to every impulse it receives.
C) Neural impulses travel at speeds ranging from 3 feet per second to 400 feet per second.
D) The neuron may fire during the relative refractory period.

Question

Quizplus · Accepted Answer

Neurons do not fire in response to every impulse they receive, as the incoming message must be above a certain threshold to cause a neural impulse. This is known as the all-or-nothing principle. The other options are true: neural impulses require a certain threshold to be met, they travel at various speeds, and the neuron may fire during the relative refractory period.

Which of the Following Is NOT True of Neural Impulses