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

20. The Lymphatic System

Introduction to the Lymphatic System

Anatomy & Physiology

20. The Lymphatic System

Introduction to the Lymphatic System

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Multiple Choice

Which of the following is not a true statement about the lymphatic system?

Lymph nodes filter lymph to remove pathogens and debris.

Lymph is pumped through the lymphatic vessels by the heart.

The lymphatic system plays a role in immune function.

The lymphatic system helps in the absorption of dietary fats.

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Verified step by step guidance

Begin by understanding the primary functions of the lymphatic system. It is responsible for maintaining fluid balance, filtering lymph to remove pathogens and debris, playing a role in immune function, and aiding in the absorption of dietary fats.

Next, consider the mechanism of lymph movement. Unlike blood circulation, lymph is not pumped by the heart. Instead, it moves through the lymphatic vessels primarily due to the contraction of skeletal muscles and the presence of valves that prevent backflow.

Evaluate each statement given in the problem. The statement 'Lymph nodes filter lymph to remove pathogens and debris' is true, as lymph nodes are key sites for filtering lymph and initiating immune responses.

The statement 'The lymphatic system plays a role in immune function' is also true. The lymphatic system is integral to the body's defense mechanisms, housing lymphocytes and other immune cells.

Finally, assess the statement 'Lymph is pumped through the lymphatic vessels by the heart.' This is not true, as the heart does not pump lymph. Instead, lymph movement relies on muscle contractions and pressure changes within the thoracic cavity during breathing.