What Is the Physiology Behind the Increase in Our Heart

question 49

Multiple Choice

What is the physiology behind the increase in our heart rate in fight-or-flight situations?

• A) Epinephrine binds to β₂ receptors and leads to the vasodilation of the cardiac muscle arterioles.
• B) Norepinephrine binds to β₂ receptors and leads to the vasoconstriction of the cardiac muscle arterioles.
• C) Epinephrine binds to α₁ receptors and leads to the vasodilation of the cardiac muscle arterioles.
• D) Norepinephrine binds to α₁ receptors and leads to the vasoconstriction of the cardiac muscle arterioles.
• E) Epinephrine binds to α₂ receptors and leads to the vasodilation of the cardiac muscle arterioles.

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Definitions:

Extreme Behaviors

Actions that significantly deviate from the norm, often in a way that is dangerous or challenges societal expectations.

Collective Efficacy

A group's shared belief in its conjoint capabilities to organize and execute the courses of action required to produce given levels of attainments.

Challenging Goals

Objectives set for individuals or teams that are difficult to achieve and require significant effort and dedication.

Group Identity

The sense of belonging to a specific group and identifying with its characteristics, values, and norms.