Question

During a stroke, neurons may starve to death because:

A) There is an excess of oxygen supply to the affected area.

B) Blood flow to the brain is interrupted, leading to a lack of oxygen and nutrients.

C) Neurons become hyperactive and consume too much energy.

D) The metabolic rate of neurons decreases.

Answer 1

During a stroke, neurons starve to death because blood flow to the brain is halted, depriving them of oxygen and nutrients necessary for their survival.

Step-by-step explanation:

During a stroke, neurons may starve to death because B) Blood flow to the brain is interrupted, leading to a lack of oxygen and nutrients. Neurons are extremely sensitive to the shortage of oxygen and glucose due to the blockage or rupture in the brain's blood vessels. This disruption can be caused by a blood clot, fat embolus, or an air bubble, leading to ischemic or hemorrhagic strokes. The lack of blood flow results in dying brain cells, which manifests as various neurological symptoms and disabilities depending on the affected brain areas.