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

Antigens

Anatomy & Physiology

21. The Immune System

Antigens

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Problem 12b

Textbook Question

Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
The secondary immune response is mediated by plasma cells.

Verified step by step guidance

Step 1: Understand the concept of the secondary immune response. The secondary immune response occurs when the immune system encounters a pathogen it has previously been exposed to. It is faster and more robust due to the presence of memory cells.

Step 2: Recall the role of plasma cells in the immune system. Plasma cells are derived from B cells and are responsible for producing antibodies during the primary immune response.

Step 3: Identify the key players in the secondary immune response. Memory B cells and memory T cells are the primary mediators of the secondary immune response, as they quickly recognize the pathogen and initiate a faster immune reaction.

Step 4: Evaluate the statement: 'The secondary immune response is mediated by plasma cells.' Since plasma cells are primarily involved in the primary immune response, this statement is false.

Step 5: Correct the false statement: 'The secondary immune response is mediated by memory B cells and memory T cells, which rapidly activate upon re-exposure to the same antigen.'

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Secondary Immune Response

The secondary immune response occurs when the immune system encounters a pathogen for the second time. It is characterized by a faster and more robust reaction compared to the primary immune response, primarily due to the presence of memory cells that were generated during the first exposure.

Plasma Cells

Plasma cells are specialized B cells that produce antibodies in response to an antigen. They play a crucial role in the immune response by secreting large quantities of antibodies that help neutralize pathogens and mark them for destruction by other immune cells.

B Cells and Memory Cells

B cells are a type of white blood cell that are essential for the adaptive immune response. Upon activation by an antigen, some B cells differentiate into memory cells, which persist long-term and enable a quicker and more effective response during subsequent exposures to the same antigen.

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Related Practice

Textbook Question

Perforins are proteins associated with the activity of

(a) T cells

(b) B cells

(d) Plasma cells

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Textbook Question

Small molecules that must combine with large proteins to become immunogenic are called:

a. Complete antigens

b. Kinins

c. Antigenic determinants

d. Haptens

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Multiple Choice

Lymphocytes that develop immunocompetence in the thymus are __________.

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Multiple Choice

Which of the following cell types are antigen-presenting cells (APCs).

1. Macrophages 2. Neutrophils 3. B cells 4. T cells 5.Plasma Cells

How does a cytotoxic T cell destroy another cell displaying antigens bound to class I MHC proteins?

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Textbook Question

Although the adaptive immune system has two arms, it has been said, 'no T cells, no immunity.' Explain.

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Multiple Choice

Toll-like receptors are found on __________.

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Textbook Question

Mr. White developed neutropenia as a consequence of cancer chemotherapy, which destroyed much of his bone marrow. What other components of the immune system would be harmed by bone marrow destruction? Would you expect his hematocrit to be elevated or decreased? What effects would you expect to see from this change in hematocrit?

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Mark the following statements as true or false. If a statement is false, correct is to make a true statement.The secondary immune response is mediated by plasma cells.

Key Concepts

Secondary Immune Response

Plasma Cells

B Cells and Memory Cells

Watch next

Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
The secondary immune response is mediated by plasma cells.