During the heart attack cardiac muscle cell are deprived of their blood supply yet atria still receiving blood. Why?

The coronary arteries supply blood to the heart muscle, while the pulmonary arteries supply blood to the lungs. During a heart attack, a blockage in the coronary arteries can cut off blood flow to the heart muscle, but the pulmonary arteries will continue to supply blood to the lungs. This is because the pulmonary arteries are not connected to the coronary arteries.

The pulmonary circulation is a separate system from the systemic circulation. The systemic circulation is the system of blood vessels that carry blood from the heart to the body and back to the heart. The pulmonary circulation is the system of blood vessels that carry blood from the heart to the lungs and back to the heart.

During a heart attack, the blockage in the coronary arteries can cause the heart to stop pumping blood effectively. This can lead to a buildup of pressure in the left atrium, which can cause fluid to leak into the lungs. This condition is called pulmonary edema.

Pulmonary edema can make it difficult to breathe and can be life-threatening. If you experience symptoms of pulmonary edema, such as shortness of breath, chest pain, or coughing up frothy pink sputum, you should seek medical attention immediately.