The Walls of the Alimentary Canal Share a Common Pattern

question 7

Multiple Choice

The walls of the alimentary canal share a common pattern from esophagus to anus. How many tunics (layers) make up the wall?

• A)2
• B)5
• C)3
• D)4

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Definitions:

Perceptual Set

A mental predisposition to perceive one thing and not another, influenced by expectations, emotions, and experiences.

Difference Threshold

The minimum difference in stimulation that a person can detect 50 percent of the time, also known as the Just Noticeable Difference (JND).

Absolute Threshold

The smallest level of a stimulus that can be detected by the senses, such as the lightest touch or quietest sound perceivable.

Absolute Threshold

The smallest level of stimulus that can be detected by a sense (hearing, sight, touch, etc.) at least 50% of the time.