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.
As the process of atherosclerosis continues, the bump gets bigger. A big enough bump can create a blockage. Atherosclerosis tends to happen throughout the body. So if you have plaque in your heart, you're at a higher risk for stroke, and vice versa, says Stein. Atherosclerosis usually causes no symptoms until middle or older age. Once narrowings become severe, they choke off blood flow and can cause pain. Blockages can also suddenly rupture, causing blood to clot inside an artery at the site of the rupture.