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

An obstruction in the glomerulus would most directly affect the flow of blood into which of the following structures?

Efferent arteriole

Afferent arteriole

Renal pelvis

Collecting duct

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Verified step by step guidance

Understand the anatomy of the nephron: The glomerulus is a network of capillaries located within the nephron of the kidney. It is responsible for filtering blood and is situated between the afferent arteriole (which brings blood into the glomerulus) and the efferent arteriole (which carries blood away from the glomerulus).

Identify the structures involved: The afferent arteriole delivers blood to the glomerulus, while the efferent arteriole carries filtered blood away. The renal pelvis and collecting duct are downstream structures involved in urine formation and transport, not directly connected to the blood flow through the glomerulus.

Analyze the impact of an obstruction: If there is an obstruction in the glomerulus, it would most directly affect the flow of blood exiting the glomerulus through the efferent arteriole. Blood flow into the glomerulus via the afferent arteriole may also be affected indirectly due to increased pressure or resistance.

Eliminate unrelated options: The renal pelvis and collecting duct are part of the urinary system but are not directly involved in the blood flow through the glomerulus. Therefore, they are not affected by an obstruction in the glomerulus in terms of blood flow.

Conclude the correct answer: Based on the anatomy and physiology of the nephron, the structure most directly affected by an obstruction in the glomerulus is the efferent arteriole.