Coronary Artery Disease. The coronary arteries are the blood vessels that supply the heart with oxygen and nutrients. When there is build up of cholesterol (plaque) inside the walls of the coronary arteries, the blood flow to the heart decreases.Usually there are no symptoms when the blockage is small.his completely blocks the flow of blood in the artery. The area of heart muscle supplied by that artery then becomes damaged due to lack of oxygen and nutrients. Blockages of any size can cause a heart attack (myocardial infarction).Coronary artery disease is very common throughout the world.
A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Keys with symbols of the same color indicate that their secondary function will be activated by pressing them while holding the Fn key down. In this example, you can see that pressing and holding down the Fn key, along with the up or down arrows, would adjust the brightness. Tip: The Fn key is almost always located in the bottom left-hand side of the keyboard, next to the Ctrl key. However, it may also be located to the right of the spacebar on some keyboards. Tip: The Fn key should not be confused with the Function keys F1 - F12 found on all computer keyboards.