Question

practice it
what happens when the concentration of solutes in the blood is high?
the liver produces more bile to help break down the excess solutes
aldosterone is released and causes the kidneys to excrete more water into the renal tubules
the heart rate decreases to compensate for the increased solute concentration
the lungs begin to hyperventilate to remove excess solutes through exhalation
adh is released, which causes the kidneys to reabsorb more water from the renal tubules back into the bloodstream

Explanation:

When blood solute concentration is high (hypertonic), osmoreceptors in the hypothalamus detect this. The hypothalamus signals the posterior pituitary to release Antidiuretic Hormone (ADH). ADH acts on the kidneys' collecting ducts. It increases their permeability to water. As a result, more water is reabsorbed from the renal tubules back into the bloodstream. This helps dilute the solutes in the blood, bringing the concentration back to normal.

• The liver's bile is for fat digestion, not solute concentration regulation.
• Aldosterone regulates sodium and potassium, not water reabsorption in response to high blood solute concentration.
• Heart rate changes are mainly for oxygen - nutrient delivery and blood pressure, not solute concentration.
• Lungs remove carbon dioxide, not solutes (except very minor water - related in exhaled air, but not for solute concentration regulation like this).

Answer:

ADH is released, which causes the kidneys to reabsorb more water from the renal tubules back into the bloodstream.