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A conclusion as to the nature of an illness
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- This diagnostic imaging procedure can identify calcium deposits in and around coronary arteries.
- are arteries or veins more superficial?
- Deoxygenated blood from the body enters the right atrium of the heart (though the venae cavae), and oxygenated blood from the lungs enters the left atrium (through the pulmonary veins). Most of this blood flows directly into the ventricles.The atria contract, squeezing the remaining blood into the ventricles. Moments later, the ventricles contract, pumping deoxygenated blood from the right ventricle to the lungs (via the pulmonary arteries) and pumping oxygenated blood from the left ventricle to the body(via the aorta)Ventricular fibrillation is immediately life threatening because the ventricles are responsible for pumping deoxygenated blood to the lungs to be oxygenated and for pumping oxygenated blood to the rest of the body. If the ventricles do not contract, the flow of blood in the body stops, preventing body cells (especially brain cells) from receiving needed oxygen and causing death.