The lactic acid diffuses out of the muscles and is taken to the liver by the blood. The liver can change lactic acid back into glucose: however, this conversion also requires the use of ATP. During strenuous exercise, primarily the muscles and not the liver use the oxygen, so the lactic acid accumulates.
/quenchÂ·ing/ (kwenchÂ´ing) 1. suppressing or diminishing a physical property, as of heat in a metal by immersion in cold liquid. 2. decrease of fluorescence from an excited molecule by other molecules that absorb some emission energy that would otherwise occur as light.
Quenching is the act of rapidly cooling the hot steel to harden the steel. Water: Quenching can be done by plunging the hot steel in water. The water adjacent to the hot steel vaporizes, and there is no direct contact of the water with the steel. This slows down cooling until the bubbles break and allow water contact with the hot steel.