Author: workhouse123

The exact relationship between the dose and the response depends on the biological objectunder observation and the drug employed.When a logarithm of dose as abscissa and responses as ordinate are constructed graphically,the “S” shaped or sigmoid type curve is obtained.The lowest concentration of a drug that elicits a response is minimal dose, and the largestconcentration…

Involves how the drugs act on target cells to alter cellular function.A. Receptor and non-receptor mechanisms: Most of the drugs act by interacting with acellular component called receptor. Some drugs act through simple physical or chemicalreactions without interacting with any receptor. Receptors are protein molecules present either on the cell surface or with in the…

Definitions: Pharmacology: Pharmacology is the study of interaction of drugs with living organisms.It also includes history, source, physicochemical properties, dosage forms, methods ofadministration, absorption, distribution mechanism of action, biotransformation,excretion, clinical uses and adverse effects of drugs. Pharmacodynamics: The study of the biological and therapeutic effects of drugs (i.e,“what the drug does to the body”).