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

The ability to form concentrated urine depends on the functions of the:

Ureter

Urinary bladder

Loop of Henle

Renal capsule

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Verified step by step guidance

Understand the role of the Loop of Henle in the kidney: The Loop of Henle is a structure in the nephron that plays a critical role in the concentration of urine by creating a gradient of solute concentration in the medulla of the kidney.

Learn about the countercurrent mechanism: The Loop of Henle operates using a countercurrent multiplier system, where the descending limb is permeable to water but not solutes, and the ascending limb is impermeable to water but actively transports solutes out.

Recognize the importance of the medullary concentration gradient: The solute gradient established by the Loop of Henle allows water to be reabsorbed from the collecting ducts under the influence of antidiuretic hormone (ADH), leading to the formation of concentrated urine.

Differentiate the functions of other structures: The ureter transports urine from the kidney to the bladder, the urinary bladder stores urine, and the renal capsule is a protective layer around the kidney. None of these structures directly contribute to urine concentration.

Conclude that the Loop of Henle is the correct answer: Its unique structure and function are essential for the kidney's ability to produce concentrated urine, which is vital for maintaining water balance in the body.