When blood supply to the brain is impaired, oxygen decreases and brain cells can die.
This is called stroke.
A blocked artery (ischemic stroke) or a blood vessel leak or burst are the two basic causes of stroke (hemorrhagic stroke). Transient ischemic attacks (TIAs), which are brief interruptions in blood supply to the brain that don't persist long, can occur in some persons.
Depending on where in the brain the stroke occurs and how many brain cells are lost, the effects of a stroke might vary. Paralysis, trouble swallowing or communicating, memory loss, discomfort, emotional changes, and behavioral problems can all be brought on by a stroke.
To learn more about stroke visit:
https://brainly.com/question/26245192
#SPJ4