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

Where are pathogens filtered from lymph in the lymphatic system?

Spleen

Tonsils

Lymph nodes

Thymus

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Verified step by step guidance

Understand the role of the lymphatic system: The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste, and other unwanted materials. Its primary function is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.

Identify the function of lymph nodes: Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. They filter lymph fluid and trap pathogens such as bacteria and viruses, which are then destroyed by specialized white blood cells called lymphocytes.

Differentiate between lymph nodes and other lymphatic organs: The spleen, tonsils, and thymus are also part of the lymphatic system but have different functions. The spleen filters blood, the tonsils protect against pathogens entering through the mouth and throat, and the thymus is involved in the maturation of T-cells, a type of lymphocyte.

Recognize the location of lymph nodes: Lymph nodes are distributed throughout the body, with clusters found in areas such as the neck, armpits, and groin. They act as checkpoints where lymph is filtered and cleaned before it is returned to the bloodstream.

Conclude that lymph nodes are the primary sites for filtering pathogens from lymph: Given their specific role in filtering lymph and trapping pathogens, lymph nodes are the correct answer to where pathogens are filtered from lymph in the lymphatic system.