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 Kidneys

Anatomy & Physiology

25. The Urinary System

The Kidneys

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Multiple Choice

Where in the kidney does blood filtration primarily occur?

Loop of Henle

Collecting duct

Glomerulus

Renal pelvis

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Verified step by step guidance

Understand the structure of the kidney: The kidney is composed of functional units called nephrons, which are responsible for filtering blood and forming urine. Each nephron has several parts, including the glomerulus, loop of Henle, collecting duct, and renal pelvis.

Focus on the glomerulus: The glomerulus is a network of capillaries located within the nephron. It is surrounded by Bowman's capsule, which collects the filtrate produced during blood filtration.

Learn the process of filtration: Blood enters the glomerulus through the afferent arteriole and exits via the efferent arteriole. The high pressure in the glomerulus forces water, ions, and small molecules out of the blood and into Bowman's capsule, forming the filtrate.

Differentiate the roles of other structures: The loop of Henle is involved in concentrating urine, the collecting duct is responsible for water reabsorption and final urine concentration, and the renal pelvis collects urine before it moves to the ureter. None of these structures are directly involved in blood filtration.

Conclude that blood filtration primarily occurs in the glomerulus, as it is the site where the initial separation of waste products and useful substances from the blood takes place.