Explain why "Blood" is the "Ultimate Buffer Solution"?

Blood could be considered the "ultimate buffer solution"
because its role within organisms is to carry oxygen to every cell in the human body,
and also to regulate many systemic functions involving the metabolism and production of
hormones and enzymes.

A buffer solution is defined as a
watery substance that contains either a weak or a strong acid. These acids are, in turn,
balanced by a counterpart base which is either strong when the acid is weak, or weak
when the acid is strong. With this balance, the buffer solution is capable of balancing
the PH acid in chemical reactions.

Concisely, blood
possesses the balanced combination of acid and base that makes it a buffer solution.
Moreover, blood is ever-present in every single chemical reaction that takes place in
the human body. This being said, the consistency and composition of blood, as well as
the vast amount of it, makes it capable of performing the function of regulating the PH
of the everyday metabolic reactions that occur within the human
body.