Coronary heart disease (CHD) is a disease in which a waxy substance called plaque (plak) builds up inside the coronary arteries. These arteries supply oxygen-rich blood to your heart muscle. When plaque builds up in the arteries, the condition is called atherosclerosis (ATH-er-o-skler-O-sis).f the flow of oxygen-rich blood to your heart muscle is reduced or blocked, angina (an-JI-nuh or AN-juh-nuh) or a heart attack can occur. Angina is chest pain or discomfort. It may feel like pressure or squeezing in your chest. The pain also can occur in your shoulders, arms, neck, jaw, or back.
It means Alternate. The Alt key on a computer keyboard is used to change (alternate) the function of other pressed keys. It means Alternate. The Alt key on a computer keyboard is used to change (alternate) the function of other pressed keys.
CPU - This stands for the Central Processing Unit of the computer. This is like the computerâs brain. MAC - This is an abbreviation for Macintosh, which is a type of personal computer made by the Apple Computer company. OS - This is the Operating System of the computer. It is the main program that runs on a computer and begins automatically when the computer is turned on.