Tolerance Develops for the Use of Some Drugs Because

question 131

Multiple Choice

Tolerance develops for the use of some drugs because

• A) over time,the blood-brain barrier more effectively blocks the movement of the drug from the blood supply into the brain.
• B) more of the drug is absorbed by the body's fat stores,leading to the need to use more to get the same effects.
• C) the body's compensation for the drug cancels out its effects.
• D) the experienced user's expectations cancel out the drug's effects.

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Definitions:

Gestation

The period of development between fertilization and birth in viviparous organisms, often referring to human pregnancy.

Fetus

The developmental stage of a human being in the womb from the ninth week after fertilization until birth.

Survival

The process of continuing to live or exist, often despite hardship or danger.

Malnourished

The condition of having inadequate nutrition, either because of insufficient intake of calories or essential nutrients, or improper absorption.