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

What is the functional unit of the kidney?

Glomerulus

Nephron

Renal pelvis

Ureter

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Verified step by step guidance

Step 1: Understand the question by identifying the key term 'functional unit of the kidney.' This refers to the smallest structure within the kidney that performs its primary functions, such as filtration, reabsorption, and secretion.

Step 2: Review the anatomy of the kidney. The kidney is composed of several structures, including the nephron, glomerulus, renal pelvis, and ureter. Each plays a distinct role in the kidney's function.

Step 3: Focus on the nephron. The nephron is the functional unit of the kidney because it is responsible for filtering blood, removing waste products, and regulating water and electrolyte balance. It consists of components such as the glomerulus, proximal tubule, loop of Henle, distal tubule, and collecting duct.

Step 4: Clarify the role of the glomerulus. The glomerulus is a part of the nephron and is specifically involved in the filtration of blood. While important, it is not the entire functional unit of the kidney.

Step 5: Eliminate incorrect options. The renal pelvis and ureter are structures involved in the transport of urine but do not perform filtration or other kidney functions. Therefore, the correct answer is 'nephron,' as it encompasses all processes essential to kidney function.