An Action Potential

question 32

Multiple Choice

An action potential

• A)is an all or nothing response.
• B)may be stopped early on if the stimulus is removed.
• C)has various degrees of intensity depending on the stimulus.
• D)may last for several seconds depending on the stimulus.
• E)has all of these characteristics except it is NOT an all or nothing response.

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Definitions:

Serosa

A smooth membrane consisting of a thin layer of cells that secrete serous fluid, covering internal organs and body cavities.

Alimentary Canal

The whole passage along which food passes through the body from mouth to anus, including the esophagus, stomach, and intestines.

Peritoneum

The double-walled, outermost layer of the alimentary canal; also called the serosa.

Alimentary Canal

The whole passage along which food passes through the body from mouth to anus, including all the organs involved in digestion and absorption.