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

Review of Cytotoxic vs Helper T Cells

Anatomy & Physiology

21. The Immune System

Review of Cytotoxic vs Helper T Cells

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Multiple Choice

How do helper T-cells and cytotoxic T-cells work together in the immune response?

Helper T-cells directly destroy infected cells.

Cytotoxic T-cells activate helper T-cells by presenting antigens.

Helper T-cells activate cytotoxic T-cells by releasing cytokines.

Cytotoxic T-cells release antibodies to neutralize pathogens.

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Verified step by step guidance

Understand the role of Helper T-cells: Helper T-cells, also known as CD4+ T-cells, play a crucial role in the immune response by activating other immune cells. They do not directly destroy infected cells but instead release signaling molecules called cytokines.

Recognize the function of Cytotoxic T-cells: Cytotoxic T-cells, or CD8+ T-cells, are responsible for directly attacking and destroying infected cells. They recognize infected cells by detecting antigens presented on the surface of these cells.

Clarify the interaction between Helper T-cells and Cytotoxic T-cells: Helper T-cells release cytokines that are essential for the activation and proliferation of Cytotoxic T-cells. This interaction is crucial for mounting an effective immune response.

Correct the misconceptions: Helper T-cells do not directly destroy infected cells, and Cytotoxic T-cells do not release antibodies. Instead, antibodies are produced by B-cells, another type of immune cell.

Summarize the correct immune response process: Helper T-cells activate Cytotoxic T-cells by releasing cytokines, which then allows Cytotoxic T-cells to target and destroy infected cells, thereby contributing to the immune defense against pathogens.