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 Heart2h 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

Major Histocompatibility Complex Molecules

Anatomy & Physiology

21. The Immune System

Major Histocompatibility Complex Molecules

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Multiple Choice

Which markers are found on all nucleated cells?

MHC class I.

MHC class II.

CD4.

CD8.

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Verified step by step guidance

Understand the concept of Major Histocompatibility Complex (MHC) molecules. MHC molecules are proteins found on the surface of cells that play a crucial role in the immune system by presenting antigens to T cells.

Differentiate between MHC class I and MHC class II molecules. MHC class I molecules are present on all nucleated cells, whereas MHC class II molecules are typically found on antigen-presenting cells such as macrophages, dendritic cells, and B cells.

Recognize that CD4 and CD8 are co-receptors found on T cells, not on all nucleated cells. CD4 is found on helper T cells, while CD8 is found on cytotoxic T cells.

Identify that MHC class I molecules are the markers found on all nucleated cells. They are essential for the immune system to recognize cells as 'self' and to detect infected or cancerous cells.

Conclude that MHC class II, CD4, and CD8 are not markers found on all nucleated cells, as they have specific roles and locations within the immune system.