BN517 LECTURE 6 PHARMACODYNAMICS EXAM ACTUAL QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++

BN517 LECTURE 6 PHARMACODYNAMICS EXAM ACTUAL


QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS


GRADED A++



pharmacodymanics:

the study of the drug and how it interacts with the molecular taget

- what the drug does to the body, the mechinism of action

drug action usually works in one of 4 ways:

replace or act as a substitute for missing substances

stimulate if increase a cellualr activity

depress or slow cellular activity

interfere with function of foregin cells

what do drugs do:

drugs donot confer any new function to cells, tissues or organs

they modify existing functions

this could be done by:

- bind to protein target

, - combine with other molecules

- alter membrane activity

receptors

- usually for a drug to produce an effect there has to be some receptor with whcih it can

react

- 4 primary drug tagets

- receptors generally have specific physiological roles and drugs are either accentuating

or blocking the action of the drug

4 primay drug targets(receptors):

enzymes

carrier molecules

ion channels

specific receptors

places in body drugs my be:

free inn plasma

bound to plasma proteins

bound to a receptor

bound to a tissue

For a Drug to be Effective it must be