HUD - Heads up display. Some of your vehicleâs key instrumentation is flashed up onto the bottom of the windshield. This allows drivers to check speed, etc. without having to take their eyes off of the road. Infrared - A term used to describe Solar Coated glass. Laminated - A sandwich of two pieces of glass with a PVB layer between them.
This structure controls the heart rate and is called the heart's natural pacemaker. The sinus node signals the heart to speed up during exercise or in situations that are stressful, frightening or exciting. For example, a 10- to 15-minute brisk walk typically elevates the heart rate to 110 to 120 beats per minute. Also, the sinus node increases the heart rate when the body is stressed because of illness. In all of these circumstances, the heart rate increase is a normal response. Likewise, the sinus node signals the heart to slow down during rest or relaxation.
An abnormally high pulse rate above 100 beats per minute is also called tachycardia, and it occurs when the heart tissues produce electrical signals rapidly, affecting the upper or lower chamber of the heart, or both. Tachycardia, or rapid heart rate, may produce either a regular or an irregular rhythm in the heart.At extremely rapid rates, the heart may not be able to pump oxygen-rich blood efficiently to the rest of the body, and may cause symptoms as well as complications. Emotional factors: Temporary causes of high pulse rate include emotional factors like sudden fear, emotional stress or anxiety, excitement, and nervousness. 2  These are normal responses of the body, and tachycardia may subside after the stimulus is gone.