What is the name for a neurotransmitter that move messages throughout the nervous system

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.

List three reasons people may begin using tobacco

Describe the structure of a monosaccharide and name the three monosaccharides important in nutrition.