ERA. 1  baseball, baseball game - a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs; he played baseball in high school; there was a baseball game on every empty lot; there was a desire for National League ball in the area; play ball!.
The contraction of the heart muscle starts in the two atria, which push the blood into the ventricles. Then the walls of the ventricles squeeze together and force the blood out into the arteries: the aorta to the body and the pulmonary artery to the lungs.
Yes. To understand how, hereâs a little background on how heart disease happens. Most heart disease results from atherosclerosis, which is cholesterol build-up, or plaque, in the arteryâs inner walls. Plaque can burst or rupture, which triggers blood clots that may block blood flowing to the heart.The result is a heart attack.Thatâs the bad news.o understand how, hereâs a little background on how heart disease happens. Most heart disease results from atherosclerosis, which is cholesterol build-up, or plaque, in the arteryâs inner walls. Plaque can burst or rupture, which triggers blood clots that may block blood flowing to the heart.