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 T Lymphocytes

Anatomy & Physiology

21. The Immune System

Introduction to T Lymphocytes

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Multiple Choice

Which T cell plays an integral role in both humoral and cell-mediated immunity?

Memory T cells

Cytotoxic T cells (CD8+)

Helper T cells (CD4+)

Regulatory T cells

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Verified step by step guidance

Understand the role of T cells in the immune system: T cells are a type of lymphocyte that play a central role in cell-mediated immunity. They are essential for the immune response and can be classified into different types based on their functions.

Identify the types of T cells: The main types of T cells include Helper T cells (CD4+), Cytotoxic T cells (CD8+), Memory T cells, and Regulatory T cells. Each type has a specific role in the immune response.

Focus on Helper T cells (CD4+): These cells are crucial for both humoral and cell-mediated immunity. They assist other cells in the immune system by releasing cytokines, which help activate and direct other immune cells.

Explore the function of Helper T cells in humoral immunity: In humoral immunity, Helper T cells aid B cells in producing antibodies. They do this by recognizing antigens presented by B cells and providing necessary signals for B cell activation and differentiation.

Examine the role of Helper T cells in cell-mediated immunity: In cell-mediated immunity, Helper T cells activate and enhance the function of Cytotoxic T cells and macrophages, which are responsible for directly attacking infected or cancerous cells.