Which of the following is not involved in maintaining a constant level of body fluid (water)?
Answer (2)
In maintaining a constant level of body fluid, the kidneys, hormonal regulation, the thirst mechanism, and skin contribute significantly. However, the digestive system is not primarily involved in regulating fluid levels. Therefore, the correct answer to the question is the digestive system.
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To answer the question of which entity is not involved in maintaining a constant level of body fluid (water), let's consider the processes and organs typically involved in this biological regulation, known as homeostasis.
Kidneys : The kidneys play a crucial role in regulating water balance. They filter the blood to remove wastes and excess substances, including water, through urine.
Hypothalamus : This region of the brain is vital in controlling thirst and the release of hormones like antidiuretic hormone (ADH), which regulates water balance.
Liver : Although primarily involved in metabolism and detoxification, the liver does not play a direct role in water balance regulation.
Skin : While the skin aids in cooling the body through sweat (which contains water), it is not directly involved in maintaining fluid levels in the body.
Considering the typical options you might have, organs like the liver are not directly involved in water balance regulation. The primary players in maintaining constant body fluid levels include the kidneys, hypothalamus, and hormones like ADH, which directly regulate water reabsorption and excretion. Therefore, the liver would be an example of an organ not involved in this specific homeostatic function.
