What distinguishes a heart attack from heart failure.
a. a heart attack results from poor blood flow, while heart failure involves a total interruption of blood flow.
b. both heart attack and heart failure result in heart tissue death, but more tissue dies as a result of heart failure.
c. heart tissue dies during a heart attack, while heart failure results in systemic oxygen deficiency.
d. heart failure results in body tissues receiving such a high level of oxygen that it is toxic.

C is the most probable answer.

A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked. If blood flow is not restored quickly that section of heart begins to die. A heart attack can also be said to occur when blood flow to a part of the heart is blocked for a long enough time that that part of the heart muscle is damaged or dies.

Heart failure is a chronic, progressive condition in which the heart muscle is unable to pump enough blood through the heart to meet the body's needs for blood and oxygen. Basically, the heart is unable to keep up with the workload.

The answer would be C

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