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

The Nephron

Anatomy & Physiology

25. The Urinary System

The Nephron

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Multiple Choice

Which process primarily occurs at the glomerulus within the nephron?

Concentration

Reabsorption

Filtration

Secretion

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Verified step by step guidance

Understand the structure and function of the nephron: The nephron is the functional unit of the kidney, responsible for filtering blood and forming urine. It consists of several parts, including the glomerulus, proximal tubule, loop of Henle, distal tubule, and collecting duct.

Focus on the glomerulus: The glomerulus is a network of capillaries located within the Bowman's capsule. Its primary role is to filter blood, separating water, ions, and small molecules from larger proteins and blood cells.

Define filtration: Filtration is the process by which blood plasma and small solutes pass through the glomerular capillaries into the Bowman's capsule, forming the filtrate. This process is driven by hydrostatic pressure within the glomerular capillaries.

Differentiate filtration from other processes: Concentration, reabsorption, and secretion occur in other parts of the nephron, such as the proximal tubule, loop of Henle, and distal tubule. Filtration is unique to the glomerulus and is the first step in urine formation.

Conclude that filtration is the correct process occurring at the glomerulus: The glomerulus is specialized for filtration, which is essential for removing waste products and excess substances from the blood while retaining larger molecules like proteins and cells.