Secretion of saliva increases when

A. True Food, foreign bodies and the dentist are effective stimuli.

B. True E.g. lemon juice; saliva is a useful buffer to protect teeth from acid.

C. False Thinking of appetizing food results in salivary secretion by a conditioned reflex; conversely, thinking of unappetizing food inhibits secretion.

D. True Saliva helps to buffer the acid vomitus when it reaches the mouth.

E. True Sympathetic stimulation produces a scanty viscid juice; parasympathetic stimulation produces a copious watery juice.