Examlex
The valence shell of hydrogen or helium is unstable when it contains two electrons.
Fainting
A temporary loss of consciousness and posture, typically due to a decrease in blood flow to the brain, known medically as syncope.
Cerebrovascular Accident
A stroke; hemorrhage in the brain.
Ruptured Blood Vessel
The breaking or bursting of a blood vessel, which can lead to internal bleeding or hemorrhage in the affected area.
Occlusion
The blockage or closing of a blood vessel or hollow organ, which can lead to various health issues depending on the location of the blockage.
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