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Answer :
Final answer:
When body temperature rises, the body undergoes vasodilation of peripheral arterioles to cool down. This process allows for increased blood flow to the skin's surface, facilitating heat loss. Other listed options do not contribute to cooling the body effectively.
Explanation:
Body Response to Increased Temperature
When the body's temperature begins to rise, it engages in certain physiological responses to cool down. The correct reaction in this scenario is vasodilation of peripheral arterioles. This process involves the widening of the blood vessels near the surface of the skin, allowing more blood to flow through them, thereby releasing heat into the environment.
Other options listed are counterproductive in response to heat:
- Vasoconstriction of peripheral arterioles: This process narrows the blood vessels, which is typical in a cold environment to conserve heat, not in heat.
- Decreased respiration depth: When the body gets hot, respiration often increases to enhance evaporative cooling.
- Shivering: This is a mechanism to generate heat, typically activated when the body is cold.
Thus, the most accurate choice when addressing a rise in body temperature is the vasodilation of peripheral arterioles.
Learn more about Body Temperature Regulation here:
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