Homeostasis of blood osmotic pressure is maintained by which organ(s)?
Correct answer: B. Kidneys
- A. Lungs
- B. Kidneys
- C. Heart
- D. Liver
Explanation
The kidneys play a central role in maintaining blood osmotic pressure through the regulation of water and electrolyte balance. They filter the blood to remove waste products and excess substances while reabsorbing essential substances like water, sodium, and other electrolytes. By adjusting the rate of water reabsorption and electrolyte excretion, the kidneys help regulate the osmolarity of the blood, ensuring it remains within a narrow range.
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About Kidney and Urinary System
The kidney and urinary system remove nitrogenous wastes, regulate water and ion balance, and help maintain blood pH through filtration, selective reabsorption and secretion. Questions cover nephron structure, ultrafiltration, the loop of Henle, collecting ducts, urine formation and the roles of ADH and aldosterone, while distinguishing excretion from egestion.
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