alleryStart learning →Which specialized cells monitor the concentration of solutes in the blood?
ANeutrophils in the bloodstream
BOsmoreceptors in the brain
CT-helper cells in the lymph
DAquaporins in the kidney tubules
Answer & Solution
Correct answer: B. Osmoreceptors in the brain
1. In vertebrates the kidneys regulate the amount of water in the body.
2. Osmoreceptors are specialized cells in the brain that monitor the concentration of solutes in the blood.
3. If solute levels rise beyond a certain range, a hormone is released that retards water loss through the kidney and dilutes the blood.
4. Neutrophils engulf invading microorganisms, T-helper cells serve immunity, and aquaporins are channel proteins rather than sensing cells.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 5 "Structure and Function of Plasma Membranes", section 5.2 Passive Transport_
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