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 organ converts and neutralizes ammonia from the circulatory system into urea?

Bladder

Ureter

Liver

Kidney

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Verified step by step guidance

Step 1: Understand the problem by identifying the organ responsible for converting and neutralizing ammonia into urea. Ammonia is a toxic byproduct of protein metabolism that must be safely removed from the body.

Step 2: Recall the physiological function of the liver. The liver plays a central role in detoxification and metabolism, including the conversion of ammonia into urea through the urea cycle (also known as the ornithine cycle).

Step 3: Learn about the urea cycle. This biochemical pathway occurs in the liver and involves enzymes that convert ammonia and carbon dioxide into urea, which is less toxic and can be safely excreted by the kidneys.

Step 4: Differentiate the roles of the other organs listed in the problem. The bladder stores urine, the ureter transports urine from the kidneys to the bladder, and the kidneys filter blood to remove waste products, including urea, but they do not convert ammonia into urea.

Step 5: Conclude that the liver is the correct organ responsible for converting and neutralizing ammonia into urea, ensuring the body can safely excrete it through the urinary system.