Role of Carbonic Acid in Blood
Carbonic acid is an intermediate step in the transport of CO2 out of the body via respiratory gas exchange. The hydration reaction of CO2 is generally very slow in the absence of a catalyst, but red blood cells contain carbonic anhydrase, which both increases the reaction rate and dissociates a hydrogen ion (H+) from the resulting carbonic acid, leaving bicarbonate (HCO3-) dissolved in the blood plasma. This catalysed reaction is reversed in the lungs, where it converts the bicarbonate back into CO2 and allows it to be expelled. This equilibration plays an important role as a buffer in mammalian blood.
Read more about this topic: Carbonic Acid
Famous quotes containing the words role of, role and/or blood:
“A famous theatrical actress
Played best in the role of malefactress.
Yet her home-life was pure
Except, to be sure,
A scandal or two just for practice.”
—Anonymous.
“The traditional American husband and father had the responsibilities—and the privileges—of playing the role of primary provider. Sharing that role is not easy. To yield exclusive access to the role is to surrender some of the potential for fulfilling the hero fantasy—a fantasy that appeals to us all. The loss is far from trivial.”
—Faye J. Crosby (20th century)
“Art thou some god, some angel, or some devil,
That mak’st my blood cold, and my hair to stare?”
—William Shakespeare (1564–1616)