Podcast
Questions and Answers
Which component is primarily studied in pharmacodynamics?
What is a factor that typically decreases drug absorption?
Which method of administration generally leads to higher absorption rates?
What is the concern associated with drug absorption during diarrhea?
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What characterizes the mechanism of action for drugs?
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Which of the following drug forms is likely to have the highest absorption rate?
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What is one factor that can enhance drug absorption related to the patient?
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Which statement accurately describes the role of pharmacokinetics?
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Study Notes
Pharmacology Branches
- Pharmacodynamics
- Pharmacokinetics
- Pharmacotherapeutics
- Toxicology
Pharmacodynamics
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Mechanism of Action (MOA): Active components of cells form chemical bonds with drugs. Active parts include:
- Enzymes
- Ion channels
- Cell membranes
- Receptors
- DNA synthesis
- Chemical reactions (e.g., neutralization reactions like antacids)
- Physical reactions (e.g., adsorption with charcoal)
- Clinical use (desired effects of drugs)
- Side effects (undesired effects of drugs)
Pharmacokinetics
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Absorption: Transfer of drugs from administration site to blood circulation, primarily in the small intestine.
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Factors affecting absorption:
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Patient-related factors:
- Food presence (can decrease absorption, except for some drugs).
- Health condition (constipation increases, diarrhea decreases absorption).
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Drug-related factors:
- Liquid drugs absorb more easily than solid drugs.
- Parenteral administration (injection) is more effective than oral.
- Smaller drug particle size absorbs more readily than larger particle size.
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Patient-related factors:
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Factors affecting absorption:
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Description
This quiz covers key branches of pharmacology, including pharmacodynamics, pharmacokinetics, pharmacotherapeutics, and toxicology. It explores the mechanisms of drug action, absorption, and clinical effects, providing a comprehensive understanding of how drugs interact with the body. Perfect for students and professionals in the field of medicine.
