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 best describes glomerular filtration rate (GFR)?

The volume of filtrate formed by all the glomeruli in both kidneys per minute

The amount of urine excreted by the kidneys per hour

The rate at which blood flows through the renal arteries

The concentration of solutes in the filtrate

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Verified step by step guidance

Understand the concept of glomerular filtration rate (GFR): GFR refers to the volume of filtrate produced by all the glomeruli in both kidneys per minute. It is a key indicator of kidney function and reflects how efficiently the kidneys filter blood.

Eliminate incorrect options: The amount of urine excreted by the kidneys per hour is not the same as GFR, as GFR measures the filtration process, not urine output. Similarly, the rate at which blood flows through the renal arteries is related to renal blood flow, not GFR. The concentration of solutes in the filtrate is also not a direct measure of GFR.

Focus on the correct definition: GFR specifically measures the volume of filtrate formed by the glomeruli per minute, which is distinct from other renal processes like urine production or solute concentration.

Relate GFR to kidney function: GFR is used clinically to assess kidney health. A normal GFR indicates proper filtration, while a reduced GFR may signal kidney dysfunction or disease.

Summarize the correct answer: Based on the definition and elimination of incorrect options, the best description of GFR is 'The volume of filtrate formed by all the glomeruli in both kidneys per minute.'