What is the function of a closed heart valve and what stroke and a heart attack is the difference between a? what is the function of a closed heart valve? what is the differe
Stroke denotes either a bleed from a ruptured artery, or a clot that obstructed an artery that supplies blood to brain tissue! In a bleed, the blood leaking onto brain tissue destroys it! With a clot, the blood flow to the tissue is ceased, and the tissue dies from oxygen deprivation!Cardiac arrest denotes electrical failure of the heart, and it stops contracting! It occurs for many reasons, and can be the result of a heart attack!Heart attack denotes heart muscle tissue death following cessation of blood supply, usually from a clot obstructing the coronary artery supplying the muscle! It is called a myocardial infarction! Myocardial means pertaining to the heart muscle, and infarction means condition in which tissue death occurs due to cessation of blood supply! The outcome of a heart attack depends on the location within the heart, the size of the area of tissue death that results, and the ability of the heart to compensate for the area of tissue death! Outcome also depends on intervention, since the actual infarction (tissue death) may be prevented if early medical intervention can restore blood flow to the affected area of heart muscle before necrosis (tissue death) occurs!You may aslo see the term cerebral infarction used as a symonym for stroke! In this case, the stroke is the result of an occluded cerebral artery!
What is the difference between a heart attack and stroke? A stroke is a disruption of the blood supply to the brain can cause part of the brain not to function.
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