As much as 20 to 40 percent of the energy required by the brain is used by
A) sodium-potassium pumps.
B) calcium pumps.
C) anterograde transport within neurons.
D) retrograde transport within neurons.

Question

Quizplus · Accepted Answer

Sodium-potassium pumps are used to maintain the resting membrane potential of neurons, which is essential for normal functioning of the nervous system. This process requires a significant amount of energy, and as much as 20 to 40 percent of the energy required by the brain is used by these pumps. Calcium pumps, anterograde transport within neurons, and retrograde transport within neurons also require energy, but they do not account for as much energy use as sodium-potassium pumps.

As Much as 20 to 40 Percent of the Energy