Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

25. The Urinary System

Renal Physiology: Regulation of Glomerular Filtration

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Regulation of Glomerular Filtration

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Multiple Choice

Which of the following substances has regulated reabsorption in the renal tubules?

Creatinine

Glucose

Urea

Sodium

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Verified step by step guidance

Understand the concept of reabsorption in the renal tubules: Reabsorption is the process by which the kidneys recover water and solutes from the filtrate and return them to the blood. This process is crucial for maintaining homeostasis.

Identify substances that undergo regulated reabsorption: In the renal tubules, certain substances are reabsorbed in a regulated manner, meaning their reabsorption is controlled by various factors such as hormones and the body's needs.

Consider the role of sodium in the body: Sodium is a key electrolyte that helps regulate blood pressure, blood volume, and pH balance. Its reabsorption is tightly regulated by hormones like aldosterone.

Compare sodium with other substances listed: Creatinine is a waste product that is not reabsorbed; glucose is reabsorbed but not regulated in the same way as sodium; urea is partially reabsorbed but primarily excreted.

Conclude that sodium is the substance with regulated reabsorption: Due to its vital role in physiological processes, sodium's reabsorption is actively regulated in the renal tubules to maintain balance in the body.