The normal pH of the blood is about a. 8.4, b. 7.8, c. 7.4, d. 4.7.

Verified step by step guidance

1. Understand that the normal pH range of human blood is tightly regulated.
2. Recall that the normal pH range for blood is typically between 7.35 and 7.45.
3. Identify the options given: a. 8.4, b. 7.8, c. 7.4, d. 4.7.
4. Compare each option to the normal pH range of blood.
5. Select the option that falls within the normal pH range of 7.35 to 7.45.

Key Concepts

Blood pH

Blood pH is a measure of the acidity or alkalinity of blood, which is crucial for maintaining homeostasis in the body. The normal range for arterial blood pH is typically between 7.35 and 7.45, with 7.4 being the average. Deviations from this range can indicate various health issues, including acidosis or alkalosis.

Acid-Base Balance

Acid-base balance refers to the mechanisms the body uses to maintain the pH of blood and other fluids within a narrow range. This balance is achieved through buffers, respiratory control of carbon dioxide, and renal regulation of bicarbonate. Proper acid-base balance is essential for normal cellular function and metabolic processes.

Physiological Importance of pH

The physiological importance of pH lies in its influence on enzyme activity, oxygen transport, and overall metabolic processes. Enzymes, which catalyze biochemical reactions, often have optimal pH ranges, and deviations can impair their function. Additionally, hemoglobin's ability to bind and release oxygen is affected by blood pH, highlighting its critical role in respiratory and circulatory health.