science medical neurology dementia and condition capillaries constrict brain or ruptured red blood vessels in the brain.

abstract artery atherosclerosis background biology blood brain capillary cardiovascular care cells circulatory constricted crisis dementia diagnosis dna embolism emergency experiment health hematopoietic hemoglobin hospital human inflammation injuries lesion life medical medication medicine nerve neurology pharmacy red research science surgeon surgery surgical system treat treatment vaccine vein vessel virus condition capillaries constrict ruptured vessels shows damage veins wounds brain