Angina<span> (also called </span>angina pectoris<span>) is defined as: “a condition marked by severe pain in the chest, often also spreading to the shoulders, arms, and neck, owing to an inadequate blood supply to the </span>heart<span>.” A </span>heart attack<span> occurs when this same process lasts long enough to cause permanent damage to the </span>heart<span> muscle.</span>
Its important because may bond more and listen to the parent better than if the parents didn't have that type of relationship.
The AV valves close first, then the semilunars open and close, then the AV valves open
