11. Nervous Tissue and Nervous System

In a neuron, a membrane potential of –90 mV is considered __________.

Which of the following statements best describes the resting membrane state in the neuron?

Which of the following membrane ion channels in the neuron are always open?

Relative to extracellular fluid, the interior of a neuron has a negative charge because __________.

The movement of which ion out of the cell through leakage channels establishes the negative membrane potential?

Which type of ion channel opens when a chemical binds to it?

The sodium-potassium ion pump will __________.

Which of the following membrane ion channels open and close in response to changes in the membrane potential?