Textbook Question
Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
Subunit vaccines consist of pathogens that are alive but unable to cause disease.
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Ch. 20 The Lymphatic System and Immunity
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 20, Problem 11
Match the following antibodies with the correct definition.
____IgD
____IgM
____IgG
____IgA
____IgE
a. Antibody found in secretions
b. Most common antibody; crosses the placenta
c. Antibody involved in allergies and parasitic infections
d. Pentamer and potent agglutinating agent
e. Antibody bound to the B cell plasma membrane
Verified step by step guidance1
Step 1: Understand the function and location of each antibody type. Antibodies (immunoglobulins) are specialized proteins produced by B cells to help the immune system fight pathogens. Each type has a unique role and location in the body.
Step 2: Match IgD with its definition. IgD is primarily found bound to the plasma membrane of immature B cells and plays a role in initiating B cell activation. Therefore, it corresponds to definition 'e'.
Step 3: Match IgM with its definition. IgM is the first antibody produced during an immune response. It is a pentamer and is highly effective at agglutinating pathogens. This matches definition 'd'.
Step 4: Match IgG with its definition. IgG is the most abundant antibody in the blood and extracellular fluid. It can cross the placenta to provide passive immunity to the fetus. This corresponds to definition 'b'.
Step 5: Match IgA and IgE with their definitions. IgA is found in secretions like saliva, tears, and mucus, matching definition 'a'. IgE is involved in allergic reactions and defense against parasitic infections, matching definition 'c'.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Types of Immunoglobulins
Immunoglobulins, or antibodies, are specialized proteins produced by B cells that play a crucial role in the immune response. There are five main classes: IgA, IgD, IgE, IgG, and IgM, each with distinct functions and locations in the body. Understanding these types is essential for matching them to their definitions, as each class has unique characteristics and roles in immune defense.
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Function of IgG
IgG is the most abundant antibody in the bloodstream and is known for its ability to cross the placenta, providing passive immunity to the fetus. It plays a vital role in the secondary immune response, neutralizing toxins and pathogens, and facilitating opsonization, which enhances phagocytosis. Recognizing its significance helps in identifying its correct definition in the matching exercise.
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Role of IgM
IgM is the first antibody produced in response to an infection and is typically found in a pentameric form, making it an effective agglutinating agent. It is primarily present in the blood and lymphatic fluid and is crucial for the initial stages of the immune response. Understanding its structure and function is key to accurately matching it with its definition.
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Related Practice
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.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct is to make a true statement.
In the primary immune response, the lag phase lasts about 5 days, during which time B cells proliferate and differentiate.
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Textbook Question
Injured tissue releases chemicals called______ that mediate the four cardinal signs of inflammation, which are _____, ______,_____ , and_______.
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Textbook Question
When naïve B cells are activated, they differentiate into:
a. Plasma cells
b. Memory cells
c. Both a and b
d. None of the above
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Textbook Question
Which of the following functions is/are performed by complement proteins?
a. Cell lysis
b. Opsonization
c. Enhancing inflammation
d. Only a and b
e. All of the above
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