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

What primarily moves lymph through the lymphatic system?

Gravity

Contraction of skeletal muscles

Pumping action of the heart

Peristaltic movement of lymphatic vessels

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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 infection-fighting white blood cells, throughout the body.

Identify the components involved in lymph movement: The lymphatic system lacks a central pump like the heart in the circulatory system, so it relies on other mechanisms to move lymph.

Consider the role of skeletal muscles: The contraction of skeletal muscles during body movements compresses lymphatic vessels, pushing lymph through the system. This is known as the 'muscle pump' mechanism.

Evaluate the role of gravity: While gravity can influence fluid movement, it is not the primary mechanism for lymph transport, especially against gravity in the limbs.

Examine the peristaltic movement of lymphatic vessels: Lymphatic vessels have smooth muscle in their walls that can contract rhythmically, aiding in the movement of lymph, but this is not the primary mechanism compared to skeletal muscle contraction.