The Reduction in the Number or Sensitivity of Receptors in Response

question 42

Multiple Choice

The reduction in the number or sensitivity of receptors in response to prolonged activation by a drug is known as:

• A)down regulation.
• B)metabolic tolerance.
• C)homeostasis.
• D)physical dependence.

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Definitions:

Venography

A diagnostic procedure involving the injection of radiopaque dye to visualize veins, typically to detect blockages or clots.

Cobalt Treatment

A form of radiotherapy using cobalt-60 to treat conditions such as cancer by targeting diseased cells with gamma radiation.

Radioactive Substances

Materials containing or emitting radiation due to the disintegration of atomic nuclei, often used in medical treatments and scientific research.

CT Scan

Short for Computed Tomography Scan, a diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce cross-sectional images of the body.