Anatomy Practice Exam 2025 - Free Anatomy Practice Questions and Study Guide

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What role does epinephrine play in the body?

It regulates blood sugar levels

It prepares the body for fight-or-flight responses

Epinephrine, also known as adrenaline, plays a crucial role in preparing the body for fight-or-flight responses, which are essential in stressful or dangerous situations. When released by the adrenal glands, epinephrine triggers several physiological changes, such as increased heart rate, dilation of air passages, enhanced blood flow to muscles, and elevated energy availability. These changes enable the body to respond quickly and effectively to perceived threats, facilitating rapid physical action.

This hormone's primary function is not related to regulating blood sugar levels, clearing excess tissue fluid, or producing urine, which involves other hormones and systems in the body. The body’s response to stress and emergency situations is a fundamental aspect of human physiology, and epinephrine plays a central role in coordinating these responses.

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It clears excess tissue fluid

It produces urine

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