The _____ in a fatty acid is indicated by a number preceding a colon; the number of _____, by a number following a colon. For example, an n-3 18:2 fatty acid has _____ carbons and _____ double bonds. (Don't simply memorize the example!)

3000+ review questions on anatomy and physiology. 

Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.