Heart attacks happen suddenly when one of the arteries leading to the heart becomes blocked and cuts off the blood flow. Without oxygen, the heart muscles start to die.
Heart failure, on the other hand, usually develops gradually. The heart muscle becomes weaker and has trouble pumping blood to nourish the cells in your body. This is a chronic condition that gradually gets worse. But medications can help you live longer and better with it
Lungs = respiration, provides oxygen to the blood.
heart = arteries, pumps blood.
Answer:
A. Different fields of medicine use the same abbreviations
to mean completely different terms.
Explanation:
