13. What is the approximate
pH of the salivary secretion?
Is it an acid or basic fluid?
What are the main functions
of saliva?

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The saliva pH approximately 6.8. It
thus a slightly pH.

Saliva lubricates food bolus and
the enzymatic extracellular
of food. It works as a
for the mouth and it has
important role of IgA antibodies
(also in tears, colostrum,
’s milk and in mucosae of the
and airways) that the
organism against .