Human Physiology - Excretory Products

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Q1. Which part of the nephron is primarily involved in the filtration of blood? (2023)

Solution:

The glomerulus is the part of the nephron where blood filtration occurs, allowing water and small solutes to pass into the renal tubule.

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Q2. What is the role of the loop of Henle in the nephron? (2023)

Solution:

The loop of Henle plays a crucial role in the reabsorption of water and salts, helping to concentrate urine.

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Q3. What is the pH range of normal human urine? (2022)

Solution:

Normal human urine typically has a pH range of 6.0 to 7.0, which can vary based on diet and health.

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Q4. What is the normal pH range of human urine? (2022)

Solution:

The normal pH range of human urine is typically between 6.0 and 7.0, indicating it is slightly acidic.

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Q5. Which of the following conditions can lead to the presence of protein in urine? (2023)

Solution:

All of the above conditions can lead to proteinuria, which is the presence of protein in urine, indicating possible kidney issues.

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Q6. What is the main nitrogenous waste product in birds and reptiles? (2022)

Solution:

Birds and reptiles primarily excrete uric acid, which is less toxic and conserves water compared to urea.

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Q7. What is the main excretory product of purine metabolism? (2022)

Solution:

Uric acid is the main excretory product of purine metabolism in humans.

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Q8. Which organ is primarily responsible for the excretion of urea? (2020)

Solution:

The kidneys are primarily responsible for filtering blood and excreting urea in urine.

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Q9. What is the main nitrogenous waste product excreted by reptiles? (2022)

Solution:

Reptiles primarily excrete nitrogenous waste in the form of uric acid, which conserves water.

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Q10. What is the primary function of the renal pelvis? (2022)

Solution:

The renal pelvis collects urine from the collecting ducts and transports it to the ureter.