Free points

Still don't know my name.
You still don't know my name.

Mucous membranes.. a. cover or line external surface of body. b. line internal body surfaces that are in contact with the environment. c. produce antibodies to combat infection. d. secrete sweat, which has antibacterial enzymes.

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

Dementia is most commonly associated with what?