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:
“The role of the intelligence—that part of us which affirms and denies and formulates opinions—is merely to submit.”
—Simone Weil (1909–1943)
“When things turn out pretty much as expected, parents give little thought to how much they have influenced the outcome. When things don’t turn out as expected, parents give a great deal of thought to the role they play.”
—Arlene Harder (20th century)
“Fit gravefellows you are for Lincoln, Brown
And Douglass and Toussaint. . . all whose rapt eyes
Fashioned a new world in this wilderness.
American earth is richer for your bones;
Our hearts beat prouder for the blood we inherit.”
—Dudley Randall (b. 1914)