Question

pH of saliva in man varies from

• A. 8 - 10
• B. 7.5 - 8
• C. 7.5 - 9.0
• D. 6.7 - 7.2

Answer 1

The correct option is D 6.7 - 7.2

There are three pairs of salivary glands in humans - parotid, submaxilllary and sublingual. About 2 to 3 litres of saliva is produced daily. It contains 99 percent water, some salts, ions like sodium, potassium, chloride, mucin, lysozyme, ptyalin. The pH of human saliva is 6.7 - 7.2, which is basic in nature.