Textbook Question
Eileen presents with flu-like symptoms, including fever, chills, and body aches.
What part of the immune response is likely producing these symptoms?
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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 L2.3
Terrence has severe asthma and allergies, and is placed on a medication that blocks the functioning of IgE. How would this medication alleviate his symptoms?
Verified step by step guidance1
Understand the role of IgE in the immune system: Immunoglobulin E (IgE) is an antibody that plays a key role in allergic reactions and asthma. It binds to allergens and triggers the release of histamine and other inflammatory chemicals from mast cells and basophils, leading to symptoms such as airway constriction, inflammation, and mucus production.
Recognize the mechanism of the medication: The medication blocks the functioning of IgE, preventing it from binding to allergens and activating mast cells and basophils. This reduces the release of histamine and other inflammatory mediators.
Explain how blocking IgE alleviates asthma symptoms: By inhibiting IgE activity, the medication reduces airway inflammation, bronchoconstriction, and mucus overproduction, which are common symptoms of asthma.
Describe how blocking IgE alleviates allergy symptoms: Allergic reactions, such as sneezing, itching, and swelling, are caused by the release of histamine and other chemicals. Blocking IgE prevents this release, thereby reducing allergic symptoms.
Summarize the overall effect: The medication helps manage Terrence's asthma and allergies by targeting the root cause—IgE-mediated immune responses—leading to improved breathing and reduced allergic reactions.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
IgE (Immunoglobulin E)
IgE is a type of antibody produced by the immune system in response to allergens. It plays a crucial role in allergic reactions by binding to allergens and triggering the release of histamines and other chemicals from mast cells, leading to symptoms such as inflammation, bronchoconstriction, and mucus production, which are particularly problematic for individuals with asthma.
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IgE
Asthma Pathophysiology
Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, often triggered by allergens, irritants, or exercise. The inflammation leads to increased mucus production and bronchoconstriction, resulting in symptoms like wheezing, coughing, and difficulty breathing. Understanding this pathophysiology is essential for comprehending how medications can alleviate symptoms.
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Mechanism of Action of IgE Blockers
Medications that block IgE function, such as monoclonal antibodies, work by preventing IgE from binding to allergens and activating mast cells. This inhibition reduces the release of inflammatory mediators, thereby decreasing the severity of allergic reactions and asthma symptoms. By targeting IgE, these medications can provide significant relief for patients with severe asthma and allergies.
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Related Practice
Textbook Question
Complement proteins are crucial for stimulating phagocytes to clear immune complexes. Predict what type of hypersensitivity disorder might result from complement deficiencies. Explain what other consequences might arise from a complement deficiency.
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Textbook Question
Eileen presents with flu-like symptoms, including fever, chills, and body aches.
You order blood work and find that the number of neutrophils in the blood is greatly elevated. What does this tell you about the likely type of pathogen involved? Explain.
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Textbook Question
Eileen presents with flu-like symptoms, including fever, chills, and body aches.
c. What might it mean if lymphocytes instead of neutrophils were elevated? Explain your reasoning.
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