Saliva is necessary for

A. False Other digestive tract enzymes can take over if salivary enzymes are absent.

B. False But swallowing solids is difficult without saliva’s moisturizing and lubricant effects.

C. True Nervous orators with dry mouths continually sip water.

D. True In the absence of saliva, the mouth becomes infected and ulceration occurs.

E. True Substances must go into solution before they can stimulate taste receptors.