HISTOLOGY
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The sensation of thirst increases when
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the oral mucosa is dry
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the osmolality of the blood increases
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blood pressure decreases
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all of the above
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Explanation:
Detailed explanation-1: -Osmoreceptors are situated in the brain, but on the blood side of the blood-brain barrier in a circumventricular organ. These regions are stimulated by an increase in plasma osmolality and form the most important input to cause thirst and drinking.
Detailed explanation-2: -Your body fluids are adjusted by feelings of thirst or satiety after you drink. For decades, scientists have known that a brain region called the lamina terminalis controls these urges to drink or not.
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