Acid Base balance and imbalance is very important topic in Biochemistry for phase I MBBS students. This topic is divided in 4 subtopics 1. General Introduction & Regulation of blood pH by buffer system 2. Blood pH regulation by Respiratory & Renal mechanism 3. Disorders of acid base balance 4. ABG analysis This is the first part wherein genaral terms like acid,base,pH, buffer is explained in brief and regulation of blood pH by buffer system is discussed in details. #NJOYBiochemistry