Pharmacokinetics Lecture Summary
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Questions and Answers

Pharmacokinetics refers to the study of the effects of drugs on the body.

False

Drug distribution involves sending the drug to different parts of the body.

True

Excretion is the process of breaking down drugs in the body.

False

Enteral routes of drug administration include intravenous and intramuscular methods.

<p>False</p> Signup and view all the answers

Acidic drugs mainly bind to albumin.

<p>True</p> Signup and view all the answers

Pharmacodynamics focuses on the effect of the body on drugs.

<p>False</p> Signup and view all the answers

Basic drugs bind mainly to beta-acid glycoprotein.

<p>False</p> Signup and view all the answers

The intestinal epithelium is a barrier that drugs must pass through during drug administration.

<p>True</p> Signup and view all the answers

Only the free and unbound fraction of a drug is available for action, metabolism, and excretion.

<p>True</p> Signup and view all the answers

Protein binding shortens the duration of action of a drug.

<p>False</p> Signup and view all the answers

The blood-brain barrier serves as a protective barrier for the brain.

<p>True</p> Signup and view all the answers

Placental barrier allows lipid insoluble drugs to cross easily.

<p>False</p> Signup and view all the answers

Topical administration involves delivering drugs directly into the bloodstream.

<p>False</p> Signup and view all the answers

First pass metabolism refers to the metabolism of a drug during its journey from the site of absorption to the systemic circulation.

<p>True</p> Signup and view all the answers

Drugs given orally bypass first pass metabolism.

<p>False</p> Signup and view all the answers

Bioavailability is the fraction of a drug that reaches the blood circulation following administration by any route.

<p>True</p> Signup and view all the answers

The route of administration does not impact a drug's bioavailability.

<p>False</p> Signup and view all the answers

Absorption is important for all routes of drug administration, including the IV route.

<p>False</p> Signup and view all the answers

Distribution is the process of breaking down drugs in the body.

<p>False</p> Signup and view all the answers

Absorption is the entry of drugs into the bloodstream.

<p>True</p> Signup and view all the answers

Bioavailability refers to the fraction of a drug that reaches the blood circulation following administration by any route.

<p>True</p> Signup and view all the answers

Parenteral administration refers to drug administration routes that involve the digestive tract.

<p>False</p> Signup and view all the answers

Pharmacodynamics focuses on the effects of drugs on the body and their mechanism of action.

<p>True</p> Signup and view all the answers

First pass metabolism is more common in enteral routes of drug administration than in parenteral routes.

<p>True</p> Signup and view all the answers

Plasma protein binding affects the rate and extent of drug distribution.

<p>True</p> Signup and view all the answers

Basic drugs primarily bind to albumin in plasma.

<p>False</p> Signup and view all the answers

The blood-brain barrier allows all drugs to freely cross into the brain.

<p>False</p> Signup and view all the answers

During inflammation of the meninges, the blood-brain barrier becomes impermeable to drugs.

<p>False</p> Signup and view all the answers

Lipid-soluble, unionized drugs easily cross the placental barrier.

<p>True</p> Signup and view all the answers

The volume of distribution describes how extensively a drug is distributed compared to urine.

<p>False</p> Signup and view all the answers

Topical administration involves delivering drugs directly into the bloodstream.

<p>False</p> Signup and view all the answers

Bioavailability of a drug is always 100% when administered intravenously.

<p>True</p> Signup and view all the answers

First pass metabolism occurs during a drug's journey from the site of absorption to systemic circulation.

<p>True</p> Signup and view all the answers

Drugs given orally may undergo metabolism in the gut wall and liver before reaching systemic circulation.

<p>True</p> Signup and view all the answers

Enterohepatic circulation involves the movement of drugs from the liver to the kidneys for excretion.

<p>False</p> Signup and view all the answers

Drug distribution is the process of dispersing drugs from other tissues to the systemic circulation.

<p>False</p> Signup and view all the answers

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