Mechanisms Of Ph Control

Question 1

Buffer system in body fluids generally consist of

Answer 1

A combination of a weak acid and the anion released by its dissociation.
The anion functions as a weak base.

Question 2

In solution, molecules of the weak acid exist in

Answer 2

Equilibrium with its dissociation products:
HY ↔️ H + Y

Adding hydrogen to the solution upsets the equilibrium.
As a result, additional molecules of the weak acid forms, removing some of the hydrogen from the solution.

Question 3

Three major buffer systems are

Answer 3

Phosphate buffer system
Protein buffer system
Carbonic acid - bicarbonate buffer system

Question 4

These buffer systems provide only

Answer 4

A temporary solution to an acid base imbalance