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

What types of antigens are recognized by T cells?

Peptide antigens presented by MHC molecules

Nucleic acid antigens directly in the bloodstream

Polysaccharide antigens in their native form

Lipid antigens presented by CD1 molecules

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Verified step by step guidance

Understand that T cells are a type of lymphocyte that play a central role in cell-mediated immunity.

Recognize that T cells do not recognize free-floating antigens. Instead, they recognize antigens that are presented by other cells.

Learn that peptide antigens are the primary type of antigens recognized by T cells. These peptides are typically derived from proteins that have been processed inside a cell.

Identify that Major Histocompatibility Complex (MHC) molecules are responsible for presenting peptide antigens to T cells. MHC class I molecules present to CD8+ T cells, while MHC class II molecules present to CD4+ T cells.

Note that T cells can also recognize lipid antigens, but these are presented by CD1 molecules, not MHC molecules. This is a less common pathway compared to peptide antigen presentation.