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Which one of the following statements in regard to the excretion by the human kidneys is correct?
- a)Descending limb of Loop of Henle is impermeable to water.
- b)Distal convoluted tubule is incapable of reabsorbing HCO3.
- c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.
- d)Ascending limb of Loop of Henle is impermeable to electrolytes.
Correct answer is option 'C'. Can you explain this answer?
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Which one of the following statements in regard to the excretion by t...
Explanation:
The correct statement regarding excretion by the human kidneys is option C, which states that nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules.
Glomerular Filtration:
The initial step in urine formation is glomerular filtration. In this process, blood enters the glomerulus of the nephron, and the high pressure forces water, ions, and small molecules to move from the glomerulus into the Bowman's capsule. This forms the glomerular filtrate, a fluid similar to blood plasma but without proteins and large molecules.
Tubular Reabsorption:
The glomerular filtrate then moves along the renal tubules, where selective reabsorption occurs. The renal tubules consist of the proximal convoluted tubule, loop of Henle, and distal convoluted tubule.
In the proximal convoluted tubule, the majority of the reabsorption takes place. Here, water, glucose, amino acids, ions, and other solutes are actively reabsorbed into the peritubular capillaries. This reabsorption process is driven by active transport mechanisms and occurs through both transcellular and paracellular pathways.
The loop of Henle consists of a descending limb and an ascending limb. The descending limb is permeable to water but not to electrolytes, while the ascending limb is impermeable to water but actively transports electrolytes, such as sodium and chloride, out of the tubule.
The distal convoluted tubule is responsible for fine-tuning the reabsorption and secretion of specific substances. It is capable of reabsorbing various ions, such as sodium, potassium, and calcium, as well as bicarbonate ions (HCO3-).
Conclusion:
In summary, option C is correct because nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules, primarily in the proximal convoluted tubule. The descending limb of the Loop of Henle is permeable to water, the distal convoluted tubule is capable of reabsorbing HCO3-, and the ascending limb of the Loop of Henle is impermeable to electrolytes.
The correct statement regarding excretion by the human kidneys is option C, which states that nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules.
Glomerular Filtration:
The initial step in urine formation is glomerular filtration. In this process, blood enters the glomerulus of the nephron, and the high pressure forces water, ions, and small molecules to move from the glomerulus into the Bowman's capsule. This forms the glomerular filtrate, a fluid similar to blood plasma but without proteins and large molecules.
Tubular Reabsorption:
The glomerular filtrate then moves along the renal tubules, where selective reabsorption occurs. The renal tubules consist of the proximal convoluted tubule, loop of Henle, and distal convoluted tubule.
In the proximal convoluted tubule, the majority of the reabsorption takes place. Here, water, glucose, amino acids, ions, and other solutes are actively reabsorbed into the peritubular capillaries. This reabsorption process is driven by active transport mechanisms and occurs through both transcellular and paracellular pathways.
The loop of Henle consists of a descending limb and an ascending limb. The descending limb is permeable to water but not to electrolytes, while the ascending limb is impermeable to water but actively transports electrolytes, such as sodium and chloride, out of the tubule.
The distal convoluted tubule is responsible for fine-tuning the reabsorption and secretion of specific substances. It is capable of reabsorbing various ions, such as sodium, potassium, and calcium, as well as bicarbonate ions (HCO3-).
Conclusion:
In summary, option C is correct because nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules, primarily in the proximal convoluted tubule. The descending limb of the Loop of Henle is permeable to water, the distal convoluted tubule is capable of reabsorbing HCO3-, and the ascending limb of the Loop of Henle is impermeable to electrolytes.
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Which one of the following statements in regard to the excretion by t...
Urine formation involves three main processes
1-Glomerular filtration
2-Reabsorption
3-Secretion
Most percentage of glomerular filtrate is reabsorbed by the renal tubules. The loop of Henle's descending limb is permeable to water. While, the ascending limb is impermeable to water but allows transport of electrolytes.
Reabsorption of sodium ions and water takes place within the distal convoluted tubule. Proximal convoluted tubule plays a major role in absorption. Ninety per cent of substance is reabsorbed in PCT. Thus, only 1% of the glomerular filtrate is passed as urine.
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Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer?
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Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer?.
Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following statements in regard to the excretion by the human kidneys is correct?a)Descending limb of Loop of Henle is impermeable to water.b)Distal convoluted tubule is incapable of reabsorbing HCO3.c)Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.d)Ascending limb of Loop of Henle is impermeable to electrolytes.Correct answer is option 'C'. Can you explain this answer?.
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