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

Classes of Antibodies

Anatomy & Physiology

21. The Immune System

Classes of Antibodies

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Multiple Choice

Each class of antibody is specifically defined by its

Amino acid sequence of the variable region of the light chain.

Amino acid sequence of the constant region of the heavy chain.

Ability to cross the placenta.

Disulfide bonds.

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Verified step by step guidance

Understand that antibodies, also known as immunoglobulins, are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Recognize that antibodies are composed of two main regions: the variable region and the constant region. The variable region is responsible for antigen binding, while the constant region determines the antibody's class and function.

Identify that the class of an antibody is determined by the amino acid sequence of the constant region of the heavy chain. This sequence dictates the structural and functional properties of the antibody.

Consider the role of disulfide bonds in antibodies. These bonds help maintain the structural integrity of the antibody by linking the heavy and light chains together.

Note that the ability of certain antibodies to cross the placenta is a functional characteristic, not a defining feature of their class. This ability is primarily associated with the IgG class of antibodies.