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

Functions of T Lymphocytes

Anatomy & Physiology

21. The Immune System

Functions of T Lymphocytes

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Multiple Choice

Which statement is FALSE about cytotoxic T cells?

They stimulate B cells.

They destroy virus-infected cells.

They recognize MHC I bound antigens on APCs.

They induce apoptosis in infected cells.

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Understand the role of cytotoxic T cells in the immune system. Cytotoxic T cells, also known as CD8+ T cells, are primarily responsible for directly killing infected cells, particularly those infected by viruses.

Review the function of B cells in the immune response. B cells are responsible for producing antibodies and are activated by helper T cells (CD4+ T cells), not cytotoxic T cells.

Examine the interaction between cytotoxic T cells and MHC I molecules. Cytotoxic T cells recognize antigens presented by MHC I molecules, which are found on all nucleated cells, including antigen-presenting cells (APCs).

Consider the mechanism of apoptosis induction by cytotoxic T cells. These cells release perforin and granzymes to induce apoptosis in infected cells, effectively eliminating the threat.

Identify the false statement by comparing the functions of cytotoxic T cells with the options provided. The statement 'They stimulate B cells' is false because cytotoxic T cells do not directly stimulate B cells; this is the role of helper T cells.