Physiology and anatomy are crucial in pharmacy as they provide the basis for the study of drug action, efficacy, and toxicity. Physiology helps explain how drugs interact with the body at the cellular and organ level, while anatomy provides information on the structure and organization of body systems. This knowledge enables pharmacists to develop effective treatment plans, diagnose and manage diseases, and counsel patients on medication use. It also helps in understanding adverse effects, dosing, and pharmacokinetics, ultimately improving patient care and treatment outcomes.