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

Introduction to Adaptive Immunity

Anatomy & Physiology

21. The Immune System

Introduction to Adaptive Immunity

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Multiple Choice

Which of the following is a characteristic of a secondary immune response?

A secondary immune response produces as many antibodies as a primary immune response.

A secondary immune response is slower than a primary immune response.

A secondary immune response lasts longer than a primary immune response.

A secondary immune response is started by naive lymphocytes, while a primary immune response is initiated by memory cells.

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Verified step by step guidance

Understand the difference between primary and secondary immune responses. A primary immune response occurs when the immune system is first exposed to an antigen, while a secondary immune response occurs upon subsequent exposures.

Recognize that a secondary immune response is typically faster and more robust than a primary immune response due to the presence of memory cells that were generated during the primary response.

Identify that memory cells, which are long-lived, are responsible for the rapid and efficient response during a secondary immune response, leading to a quicker production of antibodies.

Note that a secondary immune response generally produces a higher quantity of antibodies and lasts longer than a primary immune response, providing more prolonged protection.

Evaluate the given options: The correct characteristic of a secondary immune response is that it lasts longer than a primary immune response, due to the activation of memory cells rather than naive lymphocytes.