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 mechanisms is NOT used to propel lymph through lymphatic vessels?

Respiratory movements

Heart pumping

Skeletal muscle contractions

Smooth muscle contractions in vessel walls

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Verified step by step guidance

Understand the function of the lymphatic system: The lymphatic system is responsible for transporting lymph, a fluid containing white blood cells, throughout the body. Unlike the circulatory system, it does not have a central pump like the heart.

Identify the mechanisms that propel lymph: Lymph is moved through lymphatic vessels by several mechanisms, including skeletal muscle contractions, respiratory movements, and smooth muscle contractions in the vessel walls.

Examine the role of skeletal muscle contractions: As skeletal muscles contract during movement, they compress lymphatic vessels, helping to push lymph through the system.

Consider respiratory movements: Breathing creates pressure changes in the thoracic cavity, which can help move lymph through the vessels.

Analyze the role of smooth muscle contractions: The walls of lymphatic vessels contain smooth muscle that can contract rhythmically to propel lymph forward. Recognize that the heart does not directly pump lymph, as it does with blood in the circulatory system.