In the context of the neural impulse,the cell membrane of a neuron permits some substances to pass through it but not others.This is because the membrane is _____.
A)negatively charged
B)semipermeable
C)polarized
D)resting

Question

Quizplus · Accepted Answer

The term "semipermeable" refers to a membrane that allows certain substances to pass through while blocking others. In the case of a neuron, the cell membrane is selectively permeable, meaning it allows some substances (such as potassium ions) to pass through more easily than others (such as sodium ions). This selectivity is critical for generating and transmitting neural impulses. Polarization refers to a difference in electrical charge across the membrane, and resting potential refers to the electrical state of a neuron when it is not actively firing an impulse. While both of these concepts are related to the neural impulse, they do not directly explain why the cell membrane is selective in which substances it allows to pass through.

In the Context of the Neural Impulse,the Cell Membrane of a Neuron