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 receptor on the helper T-cell recognizes the specific antigen presented by an antigen-presenting cell?

CD4 receptor

CD8 receptor

T-cell receptor (TCR)

B-cell receptor (BCR)

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Verified step by step guidance

Understand the role of helper T-cells in the immune system. Helper T-cells are crucial for activating and directing other immune cells.

Learn about antigen-presenting cells (APCs). These cells display antigens on their surface using major histocompatibility complex (MHC) molecules.

Recognize the importance of the T-cell receptor (TCR). The TCR on helper T-cells specifically recognizes antigens presented by APCs.

Differentiate between CD4 and CD8 receptors. CD4 is found on helper T-cells and assists in binding to MHC class II molecules, while CD8 is found on cytotoxic T-cells and binds to MHC class I molecules.

Identify the correct receptor for antigen recognition. The T-cell receptor (TCR) is responsible for recognizing the specific antigen presented by the APC, not the CD4 or CD8 receptors.