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

Introduction to the Urinary System

Anatomy & Physiology

25. The Urinary System

Introduction to the Urinary System

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Multiple Choice

Which structure in the internal anatomy of the kidney is primarily responsible for filtering blood to form urine?

Nephron

Renal pelvis

Ureter

Renal capsule

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Verified step by step guidance

Understand the function of each structure listed in the options: The nephron is the functional unit of the kidney responsible for filtering blood and forming urine. The renal pelvis collects urine from the nephrons and channels it to the ureter. The ureter transports urine from the kidney to the bladder. The renal capsule is a protective layer surrounding the kidney.

Focus on the nephron: The nephron consists of several components, including the glomerulus and tubules, which work together to filter blood, reabsorb essential substances, and secrete waste products into the forming urine.

Identify the key process of filtration: Blood enters the nephron through the glomerulus, a network of capillaries. The glomerulus filters blood based on size, allowing water, ions, and small molecules to pass into the Bowman's capsule while retaining larger molecules like proteins and blood cells.

Understand the role of the renal pelvis, ureter, and renal capsule: These structures are not directly involved in blood filtration. The renal pelvis and ureter are part of the urine transport system, while the renal capsule provides structural support and protection to the kidney.

Conclude that the nephron is the correct answer: Based on its role in filtering blood and forming urine, the nephron is the structure primarily responsible for this function in the kidney's internal anatomy.