What triggers the thirst mechanism in the body?
Understand the Problem
The question is asking about the physiological triggers for the thirst mechanism in the human body, specifically which condition among the provided options leads to an increase in thirst.
Answer
Thirst is triggered by angiotensin II, decreased blood volume, or increased blood osmolality.
The thirst mechanism in the body is triggered by angiotensin II, which is released due to conditions like hypovolemia or hypotension. A decrease in blood volume or an increase in blood osmolality also triggers thirst.
Answer for screen readers
The thirst mechanism in the body is triggered by angiotensin II, which is released due to conditions like hypovolemia or hypotension. A decrease in blood volume or an increase in blood osmolality also triggers thirst.
More Information
The thirst mechanism is an essential part of maintaining the body's fluid balance, ensuring that cells function optimally and the body remains hydrated.
Tips
A common mistake is overlooking the role of blood osmolality and only focusing on blood volume changes.
Sources
- The Neuroscience of Thirst: How your brain tells you to look for water - sitn.hms.harvard.edu
- Thirst - an overview | ScienceDirect Topics - sciencedirect.com
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