The Substance in the Brain Composed Mainly of Nerve Cells

question 23

True/False

The substance in the brain composed mainly of nerve cells and dendrites is called gray matter.

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Definitions:

Resting Membrane Potential

The electrical potential difference across the membrane of a neuron at rest, typically around -70mV.

Refractory Periods

The period immediately following an action potential during which a neuron is incapable of firing another action potential, ensuring the unidirectional flow of nerve impulses.

Firing Rate

Firing rate refers to the frequency at which a neuron sends electrical impulses, an important factor in the neural encoding of information.

Neuron

A specific type of cell responsible for conducting nerve signals; referred to as a neuron.