Question

All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator."

Answer 1

E I think that’s the answe

Answer 2

Answer: C-Saliva

Explanation: Saliva only lubricate and moisturises food, aiding in food digestion employing its digestive enzyme, the salivary amylase, to break down chunks of food. All the other options; tears, hydrochloric acid, multiple layers of cells, are used as defensive mechanism from infections by the skin and mucous membranes.