<P> There is much debate about the amount of saliva that is produced in a healthy person per day ; estimates range from 0.75 to 1.5 litres per day while it is generally accepted that during sleep the amount drops to nearly zero . In humans , the submandibular gland contributes around 70 -- 75 % of secretion , while the parotid gland secretes about 20 -- 25 % and small amounts are secreted from the other salivary glands . </P>
<P> There is much debate about the amount of saliva that is produced in a healthy person per day ; estimates range from 0.75 to 1.5 litres per day while it is generally accepted that during sleep the amount drops to nearly zero . In humans , the submandibular gland contributes around 70 -- 75 % of secretion , while the parotid gland secretes about 20 -- 25 % and small amounts are secreted from the other salivary glands . </P>
how much saliva does a human produce in a day
how much saliva does a human produce in a day
estimates range from 0.75 to 1.5 litres
estimates range from 0.75 to 1.5 litres