What Does the Specific Protein Receptor Theory of the Action

question 12

Multiple Choice

What does the specific protein receptor theory of the action of local anesthetics suggest?

• A) The specific protein receptor theory suggests that anesthetics that are highly lipid soluble cause the lipoprotein matrix of the nerve membrane to expand, narrowing the sodium channels, thus preventing depolarization.
• B) The method by which the impulses travel down the length of the nerve affects whether nodes of Ranvier are stimulated or not.
• C) Displaced Ca++ and local anesthetic drugs compete to bind to receptor sites within the ion channels of cell membranes.
• D) All of the above

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Definitions:

Brightness Contrast

The effect of surrounding brightness levels on the perception of the brightness of an object, where the same object may appear different under different lighting conditions.

Lightness Constancy

The ability to perceive the color (or lightness) of an object as constant under varying lighting conditions.

Brightest

Having the most light or luminosity; often used metaphorically to describe highly intelligent or clever individuals.

Brightness Contrast

The appearance of a differently illuminated areas in the field of vision, resulting in the perception of varying levels of light intensity.