How does the brain use oxygen?

Answer:
The brain uses oxygen in the same way other organs do. Within every cell in the brain, tiny organelles called mitochondria take up oxygen and use it to convert glucose into a usable form of cellular energy - adenosine triphosphate (ATP). Without ATP, neurons would very quickly lose their ability to fire and the whole brain would eventually shut down.
First answer by DrCJones. Last edit by DrCJones. Contributor trust: 56 [recommend contributor recommended]. Question popularity: 1 [recommend question].