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 Heart2h 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

Secondary Lymphoid Organs: Lymph Nodes

Anatomy & Physiology

20. The Lymphatic System

Secondary Lympoid Organs: Lymph Nodes

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Multiple Choice

Which of the following is NOT a characteristic of lymph nodes?

Lymph nodes activate the immune system.

Lymph nodes filter lymph.

Lymph nodes have a capsule.

Lymph nodes produce lymph.

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Verified step by step guidance

Understand the primary functions of lymph nodes: Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. They play a crucial role in filtering lymph, a fluid that circulates through the lymphatic system, and in activating the immune system by housing lymphocytes that respond to pathogens.

Identify the structural characteristics of lymph nodes: Lymph nodes are encapsulated, meaning they have a fibrous outer layer that helps maintain their shape and protect their internal structures.

Evaluate the statement 'Lymph nodes activate the immune system': This is true because lymph nodes contain immune cells that can recognize and respond to foreign invaders, thus playing a role in immune activation.

Evaluate the statement 'Lymph nodes filter lymph': This is true as well, as one of the primary functions of lymph nodes is to filter lymph fluid, trapping bacteria, viruses, and other foreign substances.

Evaluate the statement 'Lymph nodes produce lymph': This is incorrect. Lymph is produced from interstitial fluid that enters the lymphatic capillaries, not by the lymph nodes themselves. Therefore, this statement is not a characteristic of lymph nodes.