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(solved) Pharmacology Disc

(solved) Pharmacology Disc

Pharmacology Disc


The study of drugs and their effects on the body is known as pharmacology.

Pharmacodynamics is the study of drug action mechanisms…how a drug affects our bodies.

Most drugs elicit a response based on how they interact with a specific protein, which occurs via a receptor protein embedded in the cell membrane or inside the cell within the cytoplasm or nucleus.

A drug can sometimes act as a ligand for a receptor.

A drug could be:

Agonist: mimics the native ligand and induces the typical physiological response (also known as a facilitator) – Agonist promotes normal protein function.
Antagonist: binds to the active site but does not activate the receptor (also known as a blocker or inhibitor) – An antagonist silences the protein and prevents it from functioning.
Drug potency is the strength of a drug at a specific dosage or the amount of a prescription needed to produce a particular effect. Potency can also be defined as a drug’s affinity for a receptor (high affinity = small amount of medication required).


Drug Efficacy: the maximum effect that a drug can achieve. Efficacy is also defined as the drug’s effect on the receptor and how well it acts as an agonist or antagonist.

Absorption is the process by which a drug moves from the administration site into the bloodstream.
Traveling through the bloodstream to reach target cells and molecules
Metabolism: the process by which enzymes modify a drug to render it ineffective.
Excretion: the removal of a drug from the body through urine or feces.

Pharmacology Disc


Pharmacology Disc

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