Podcast
Questions and Answers
Which of the following is NOT considered a mechanism of action for drugs?
Toxicology is a branch of pharmacology that studies the desired effects of drugs.
False
What term is used to describe the transfer of drugs from the site of administration to the bloodstream?
Absorption
The presence of ______ generally decreases drug absorption in the digestive system.
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Match the following factors with their impact on drug absorption:
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Study Notes
Pharmacology Branches
- Pharmacodynamics
- Pharmacokinetics
- Pharmacotherapeutics
- Toxicology
Pharmacodynamics
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Mechanism of Action (MOA): Active parts of cells that form chemical bonds with drugs include:
- Enzymes
- Ion channels
- Cell membrane
- Receptors
- DNA synthesis
- Chemical reactions (e.g., neutralization reactions like antacids)
- Physical reactions (e.g., adsorption with charcoal)
- Clinical uses (desired effects of drugs)
- Side effects (undesired effects of drugs)
Pharmacokinetics
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Absorption: Transfer of drugs from administration site to bloodstream (occurs in small intestine)
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Factors affecting absorption:
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Patient-related factors:
- Food (often reduces absorption, except for some drugs)
- Health (constipation increases, diarrhea decreases absorption)
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Drug-related factors:
- Liquid form is more readily absorbed than solid
- Parenteral (injection) absorption is higher than oral
- Smaller drug particle size is absorbed more readily than larger particle size
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Patient-related factors:
-
Factors affecting absorption:
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Description
This quiz covers essential branches of pharmacology, including pharmacodynamics, pharmacokinetics, pharmacotherapeutics, and toxicology. Discover the mechanisms of action, absorption factors, and clinical uses of drugs to enhance your understanding of this vital field.
