Mucous Membrane - The moist linings of body passages and internal cavities involved with absorption and secretion of substances.⏎
Intravenous - The use of veins through which medications and solutions are administered.⏎
Morbidity - The relative occurrence of a disease or a condition that causes illness.⏎
Habitat - The specific geographical area or physical environment that is inhabited by an organism or a population of organisms.⏎
Germ Theory - A theory in medicine stating that microorganisms are the causative agents of infectious, contagious diseases.⏎