Saliva
a. secretion (of the serous portion) is increased primarily by sympathetic stimulation.
b. contains amylase, which digests cellulose.
c. contains lysozyme, which has a weak antibacterial action.
d. contains pepsin, which digests protein.
e. all of these
Answer: C
Feedback : Saliva contains lysozyme, which has a weak antibacterial action.