When a neuron is polarized:
A) the exterior fluid surrounding the neuron is more negatively charged than the interior of the neuron.
B) an action potential will travel down the dendrites, causing the release of neurotransmitters.
C) the electrical charge across the neuron's membrane is balanced, with the same charge outside as inside.
D) the interior of the neuron is more negatively charged than the exterior fluid surrounding the neuron.

Question

Quizplus · Accepted Answer

When a neuron is polarized, it means that it has a difference in electrical charge across its membrane. The interior of the neuron is more negatively charged than the exterior fluid surrounding it. This is due to an unequal distribution of ions (such as sodium and potassium) inside and outside of the neuron. This difference in charge is what allows for the neuron to transmit signals, such as an action potential.

When a Neuron Is Polarized