What is the mechanism occurring due to increased plasma osmolality?
Understand the Problem
The question is asking to identify the physiological mechanism that occurs as a result of increased plasma osmolality. The options provided suggest various possible responses of the body, such as changes in water intake, thirst sensation, and secretion of ADH.
Answer
Increased plasma osmolality triggers water retention and ADH release to normalize osmolality.
When plasma osmolality increases, the body retains water to produce concentrated urine and releases antidiuretic hormone (ADH) to dilute the blood and normalize osmolality.
Answer for screen readers
When plasma osmolality increases, the body retains water to produce concentrated urine and releases antidiuretic hormone (ADH) to dilute the blood and normalize osmolality.
More Information
The increase in plasma osmolality is sensed by osmoreceptors, which stimulate the release of ADH. ADH acts on the kidneys to increase water reabsorption, concentrating urine and restoring normal plasma osmolality.
Sources
- Osmolality (Blood) - Health Encyclopedia - urmc.rochester.edu
- 6. Control of Plasma Osmolarity - SimpleMed - simplemed.co.uk
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