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

21. The Immune System

Introduction to the Immune System

Anatomy & Physiology

21. The Immune System

Introduction to the Immune System

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Multiple Choice

Which of the following statements regarding Human Immunodeficiency Virus (HIV) is true?

HIV primarily attacks and destroys red blood cells.

HIV targets and weakens the immune system by attacking CD4+ T cells.

HIV infection can be cured with a single course of antibiotics.

HIV can be transmitted through casual contact such as hugging.

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Verified step by step guidance

Understand the role of HIV in the human body: HIV is a virus that targets the immune system, specifically the CD4+ T cells, which are crucial for immune response.

Recognize the function of CD4+ T cells: These cells are a type of white blood cell that play a significant role in protecting the body from infections by signaling other cells in the immune system to respond to infected cells.

Identify the incorrect statement about red blood cells: HIV does not attack red blood cells; it targets CD4+ T cells, which are part of the immune system.

Clarify the misconception about antibiotics: Antibiotics are used to treat bacterial infections, not viral infections like HIV. Therefore, HIV cannot be cured with antibiotics.

Address the transmission of HIV: HIV is not transmitted through casual contact such as hugging. It is primarily spread through specific bodily fluids such as blood, semen, vaginal fluids, and breast milk.