Which of the Following Mechanisms Is Used to Regulate Blood

question 113

Multiple Choice

Which of the following mechanisms is used to regulate blood pressure in the closed circulatory system of vertebrates?

• A) Changing the force of heart contraction
• B) Constricting and relaxing sphincters in the walls of arterioles
• C) Adjusting the volume of blood contained in the veins
• D) All of the above
• E) None of the above

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Definitions:

Mental Pressure

A state of psychological strain caused by demanding circumstances.

Other People

A reference to individuals or groups outside of oneself or the immediate circle, often considered in the context of social interaction and influence.

Internal Validity

Psychological impact of the manipulations in an experiment.

Demand Characteristic

Features of an experimental setting that lead participants to guess the purpose of the study and adjust their behavior accordingly.