ANIMAL PHYSIOLOGY
OSMOREGULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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all glucose and amino acids, most water, some ions
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most glucose, amino acids & water plus some ions
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all glucose, most amino acids & water, some ions
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all glucose, amino acids, ions and some water
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Detailed explanation-1: -So, the correct answer is ‘Amino acids’.
Detailed explanation-2: -Glucose, amino acids, salts and high amount of water are reabsorbed in the nephron during the second step of urine formation, i.e., the selective reabsorption.
Detailed explanation-3: -Most of the solute reabsorbed in the proximal tubule is in the form of sodium bicarbonate and sodium chloride, and about 70% of the sodium reabsorption occurs here.
Detailed explanation-4: -About 67 percent of the water, Na+, and K+ entering the nephron is reabsorbed in the PCT and returned to the circulation. Almost 100 percent of glucose, amino acids, and other organic substances such as vitamins are normally recovered here.
Detailed explanation-5: -The substances selectively reabsorbed by the kidneys are water, glucose, electrolytes, etc.