Acid-Base Balance and Compensation

The video explains the bicarbonate buffer system's role in maintaining pH balance in the body. It covers the pH scale, the roles of the lungs and kidneys in regulating pH, and how they compensate for imbalances. Respiratory acidosis and alkalosis occur when the lungs fail to manage CO2 levels, while metabolic imbalances arise from kidney dysfunction. The video emphasizes the faster response of the lungs compared to the kidneys in correcting pH imbalances.

What is the pH range of the scale used to measure acidity and basicity?

• 1 to 10

• 0 to 14

• 1 to 14

• 0 to 10

What happens to CO2 levels when the lungs increase their rate of breathing?

• CO2 levels increase

• CO2 levels fluctuate

• CO2 levels decrease

• CO2 levels remain constant

How do kidneys help in maintaining pH balance?

• By increasing CO2 levels

• By secreting hydrogen ions and bicarbonate

• By decreasing bicarbonate levels

• By absorbing more oxygen

What condition occurs when the lungs fail to expel enough CO2?

• Respiratory alkalosis

• Metabolic acidosis

• Respiratory acidosis

• Metabolic alkalosis

In respiratory alkalosis, what compensatory action do the kidneys take?

• Increase CO2 levels

• Reabsorb bicarbonate

• Secrete more hydrogen ions

• Decrease bicarbonate reabsorption

What is a characteristic of metabolic acidosis?

• High pH and high bicarbonate

• Low pH and low bicarbonate

• High pH and low CO2

• Low pH and high CO2

How do the lungs compensate for metabolic acidosis?

• By secreting more bicarbonate

• By increasing breathing rate

• By decreasing breathing rate

• By absorbing more hydrogen ions

What happens to bicarbonate levels in metabolic alkalosis?

• They increase

• They decrease

• They remain constant

• They fluctuate

Which organ is primarily responsible for compensating respiratory pH imbalances?

• Heart

• Liver

• Pancreas

• Kidneys

What indicates a fully compensated pH imbalance?

• High pH with low bicarbonate

• Low pH with low bicarbonate

• High pH with high CO2

• Normal pH with altered CO2 and bicarbonate