Question

In human beings, the three pairs of salivary glands produce about

• A. $1.0d{m}^3$ of saliva per day
• B. $1.5d{m}^3$ of saliva per day
• C. $2.0d{m}^3$ of saliva per day
• D. $2.5d{m}^3$ of saliva per day

Answer 1

The correct option is B

$1.5d{m}^3$ of saliva per day

The saliva is a colourless and sticky liquid produced by the salivary glands. It contains salivary amylase for digestion of carbohydrate. In quantity, it is about $1.5d{m}^3$ (cubic decimeter), i.e. 1.5 l/day.