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 these lipoproteins carries excess cholesterol from body cells to the liver?

Low-density lipoprotein (LDL)

Chylomicrons

Very low-density lipoprotein (VLDL)

High-density lipoprotein (HDL)

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Verified step by step guidance

Understand the role of lipoproteins: Lipoproteins are complexes that transport lipids, such as cholesterol and triglycerides, through the bloodstream. Each type of lipoprotein has a specific function in lipid transport.

Identify the function of each lipoprotein: Low-density lipoprotein (LDL) is known for transporting cholesterol to body cells, which can lead to plaque buildup in arteries. Chylomicrons primarily transport dietary lipids from the intestines to other locations in the body. Very low-density lipoprotein (VLDL) carries triglycerides from the liver to tissues.

Focus on high-density lipoprotein (HDL): HDL is often referred to as 'good cholesterol' because it helps remove excess cholesterol from body cells and tissues, transporting it back to the liver for excretion or re-utilization.

Recognize the process of reverse cholesterol transport: HDL plays a crucial role in reverse cholesterol transport, a process where excess cholesterol is collected from peripheral tissues and returned to the liver.

Conclude that HDL is responsible for carrying excess cholesterol from body cells to the liver, distinguishing it from other lipoproteins that have different roles in lipid transport.