Secondary Peristalsis Is Activated by

question 4

Multiple Choice

Secondary peristalsis is activated by

• A) The swallowing center
• B) Relaxation of the lower esophageal sphincter
• C) Relaxation of the upper esophageal sphincter
• D) Covering of the glottis by the epiglottis
• E) Stretch receptors in the esophagus

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Definitions:

Double-Blind

An experimental procedure in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.

Randomly Assigned

A method used in experiments where participants are allocated to different groups or conditions in a way that is determined by chance.

Control

The capacity to shape or guide the actions of individuals or the progression of situations.

Operational Definition

A clear, precise description of a variable in terms of the processes or operations used to measure or manipulate it.