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.
Updated: 04/26/2017 by. An icon is a small graphical representation of a program or file. When you double-click an icon, the associated file or program will be opened. For example, if you were to double-click on the My Computer icon, it would open Windows Explorer. Icons are a component of most GUI operating systems, including Microsoft Windows and Apple macOS X. Icons help users quickly identify the type of file represented by the icon. The image to the right is an example of My Computer icons in different versions of Microsoft Windows. Tip: Users can quickly rename any highlighted Windows icon by pressing the F2 key on the keyboard, and then typing in a new name.