In mathematics, a coefficient is a multiplicative factor in some term of a polynomial, a series or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters, and must be clearly distinguished from the other variables. For example, in.
Vasovagal syncope is a common cause of fainting. The vagus nerve is overstimulated and causes the body's blood vessels to dilate and the heart to slow down. This anti-adrenaline effect decreases the ability of the heart to pump blood upward to the brain against gravity. Without blood flow, the brain turns off.
Why You Faint. Fainting is a temporary loss of consciousness due to a loss of blood supply to the brain. The heart is continuously pumping blood to your brain, delivering oxygen. If for some reason your heart stops pumping oxygen to your brain, youâll start getting woozy or cloudy in about 3 to 5 seconds. Then, all of a sudden, youâve fainted. What Are Some Causes of Fainting. Activities that cause a rapid rise and subsequent drop in blood pressure can cause a fainting spell. Coughing forcefully, straining in the bathroom, standing up suddenly, and being in a hot crowded room can cause you to faint.