Question

pH of human blood is ______.

Options

• 6.9

• 7.0

• 7.4

• 8.1

Answer 1

pH of human blood is 7.4.

Explanation:

Normal human blood is slightly alkaline and is tightly buffered to about pH 7.4; physiological buffers (primarily the bicarbonate system, plus respiratory and renal regulation) maintain this value, and small deviations can be harmful.