Week 1 & 2 Flashcards
Describe the terms:
Potency
Refers to the required amount of a chemical for a given effect.
Describe the terms:
Selectivity
The narrowness of a drugs range of actions on particular receptors, cellular processes or tissues.
Describe the terms:
Specificity
The relation between the chemical structure of a drug and its pharmacological actions within the body.
Below are some of the pharmacologically active compounds found in plants, Give a brief description of each and name at least one example
Alkaloids
Organic nitrogen containing compounds
Examples include codeine, Morphine & Nicotine
Carbohydrates
Organic compounds Carbon, Hydrogen and Oxygen
Examples include Starch, sugars & fibres
Glycosides
Carbohydrates that yield a sugar and non-sugar on hydrolysis
Examples include Digoxin
Hydrocarbons
Used as a base for most drugs especially topical ointments
Examples include castor oil & waxes
Phenols
Compounds that contain a benze ring with a hyrdoxyl substituent
Used in resins, plastics and drugs such as aspirin
Steroids
Compounds that contain four cycloalkane rings together
Examples include cholesterol, androgens and progesterone
Oils
Highly viscous liquids there are two kinds of oils
Fixed- leaves greasy stains eg Castor oil/Olive oil
Volatile- Does not as it evaporates eg Eucalyptis peppermint
Define the following in relation to Drug names and classifications
Chemical names
Official name of the drug(not used by the general public)
Describes the drugs chemical composition and molecular structure.
Generic names
The agreed name of each drug that has been approved by the local drug authority
What us nurses look up in MIMS
Trade names
The particular brand of each drug eg Paracetamol would come under Panadol, Febridol etc
List the categories into which drugs can by classified
There are several categories but the main three are
Clinical indication, By body system and by mechanism of action
Define the following in relation to Drug names and classifications
Chemical names
Official name of the drug(not used by the general public)
Describes the drugs chemical composition and molecular structure.