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 immune cell is able to respond quickly after any subsequent encounter with the same antigen?

helper T cell

memory cell

plasma cell

antigen-presenting cell

basophil

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Verified step by step guidance

Understand the role of different immune cells in the adaptive immune response. Helper T cells assist other cells in the immune response, plasma cells produce antibodies, antigen-presenting cells display antigens to T cells, and basophils are involved in inflammatory responses.

Recognize that memory cells are a type of lymphocyte that remain in the body after an initial encounter with an antigen. They are crucial for a faster and more efficient response upon subsequent exposure to the same antigen.

Recall that memory cells can be either B cells or T cells. Memory B cells quickly produce antibodies upon re-exposure to an antigen, while memory T cells rapidly activate and proliferate to mount a defense.

Consider the concept of immunological memory, which is the basis for vaccines. This concept relies on the ability of memory cells to 'remember' a pathogen and respond more effectively upon re-exposure.

Conclude that among the options provided, memory cells are the ones specifically designed to respond quickly after any subsequent encounter with the same antigen, making them essential for long-term immunity.