Buff or BUFF may refer to: Buff, slang term for an enthusiast Buff, a pale yellow-brown colour Buff, a breed of domestic turkey named for its buff-colored plumage Buffing, a metal finishing process A neck gaiter Buff, slang term for naked Buffalo, New York, a nickname for the city State University of New York at Buffalo, a public university known as Buffalo, which sometimes gets shortened to Buff.
It is the tubular secretion of H+ and NH4+ from the blood into the tubular fluid (i.e. urine-which is then excreted from the body via the ureter, bladder, and urethra) that helps to keep blood pH at its normal level. The movement of these ions also helps to conserve sodium bicarbonate (NaHCO3).
The large, hollow organs of the digestive tract contain a layer of muscle that enables their walls to move. The movement of organ walls can propel food and liquid through the â¦ system and also can mix the contents within each organ. Food moves from one organ to the next through muscle action called peristalsis. Peristalsis looks like an ocean wave traveling through the muscle. The muscle of the organ contracts to create a narrowing and then propels the narrowed portion slowly down the length of the organ. These waves of narrowing push the food and fluid in front of them through each hollow organ.