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.
Where is the Alt key on the keyboard? The following image of a keyboard shows the location of the Alt keys, which are highlighted in blue. Note: Apple computer keyboards use the option key in place of the Alt key. Alt keyboard shortcuts and what can the alt key do?