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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which of the following is the main lymphatic duct that drains lymph from the majority of the thoracic cavity?

Subclavian vein

Cisterna chyli

Right lymphatic duct

Thoracic duct

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Verified step by step guidance

Understand the role of the lymphatic system: The lymphatic system is responsible for draining excess interstitial fluid, transporting dietary lipids, and facilitating immune responses. Lymphatic ducts are the largest vessels in this system, responsible for returning lymph to the bloodstream.

Identify the thoracic duct: The thoracic duct is the largest lymphatic vessel in the body. It drains lymph from the majority of the body, including the thoracic cavity, left side of the head, neck, and chest, as well as the lower limbs and abdomen.

Compare the options: The subclavian vein is not a lymphatic duct but a blood vessel where the thoracic duct empties lymph into the bloodstream. The cisterna chyli is a sac-like structure that collects lymph from the lower body and feeds it into the thoracic duct. The right lymphatic duct drains lymph only from the upper right quadrant of the body.

Focus on the thoracic cavity: Since the thoracic duct drains lymph from the majority of the thoracic cavity and other parts of the body, it is the correct answer in this context.

Conclude the reasoning: Based on the anatomical function and drainage areas, the thoracic duct is the main lymphatic duct responsible for draining lymph from the majority of the thoracic cavity.