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: Overview

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Overview

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Multiple Choice

Which of the following substances is not normally found in the glomerular filtrate?

Glucose

Urea

Proteins

Sodium ions

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Verified step by step guidance

Understand the process of glomerular filtration: The glomerulus is a network of capillaries in the kidney where blood is filtered. The filtration process allows water and small molecules to pass through while retaining larger molecules and cells.

Identify the components of normal glomerular filtrate: Typically, the filtrate includes water, glucose, ions (such as sodium), and waste products like urea. These are small enough to pass through the filtration barrier.

Consider the size and charge of molecules: Proteins are generally large molecules. The filtration barrier in the glomerulus is designed to prevent large molecules, such as proteins, from passing into the filtrate.

Recognize the role of the filtration barrier: The barrier consists of endothelial cells, a basement membrane, and podocytes. These structures work together to prevent large molecules and cells from entering the filtrate.

Conclude which substance is not normally found in the filtrate: Given the size exclusion properties of the glomerular filtration barrier, proteins are not typically found in the glomerular filtrate under normal conditions.