Table of contents

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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: Overview

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Overview

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Multiple Choice

Which substances are not filtered through the kidneys?

Urea

Large proteins

Glucose

Sodium ions

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Verified step by step guidance

Understand the function of the kidneys: The kidneys filter blood to remove waste products and excess substances, forming urine.

Identify the substances typically filtered by the kidneys: Small molecules like urea, glucose, and ions such as sodium are filtered through the glomerulus into the renal tubule.

Recognize the size exclusion principle: The glomerular filtration barrier prevents large molecules, such as proteins, from passing through due to their size.

Consider the role of the glomerular filtration barrier: This barrier consists of endothelial cells, a basement membrane, and podocytes, which together restrict the passage of large proteins.

Conclude which substances are not filtered: Large proteins are not filtered through the kidneys due to their size, while smaller molecules like urea, glucose, and sodium ions are filtered.