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Define immunocompetence and self-tolerance. How is self-tolerance achieved?
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Ch. 21 The Immune System: Innate and Adaptive Body Defenses
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
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TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
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Marieb, Hoehn 11th EditionCh. 21 The Immune System: Innate and Adaptive Body DefensesProblema 17
Marieb, Hoehn 11th EditionCh. 21 The Immune System: Innate and Adaptive Body DefensesProblema 17Capitolo 21, Problema 17
Differentiate between a primary and a secondary immune response. Which is more rapid and why?
Guida verificata passo dopo passo1
Step 1: Define the primary immune response as the body's first exposure to a specific antigen, during which naive B and T lymphocytes are activated, leading to a slower and smaller production of antibodies and immune cells.
Step 2: Define the secondary immune response as the immune reaction upon subsequent exposures to the same antigen, where memory B and T cells generated during the primary response are quickly reactivated.
Step 3: Explain that the secondary immune response is more rapid because memory cells recognize the antigen faster and proliferate more quickly than naive cells, leading to a faster and stronger production of antibodies.
Step 4: Highlight that the secondary response typically produces a higher concentration of antibodies, often with greater affinity, compared to the primary response.
Step 5: Summarize that the key difference lies in the presence of memory cells in the secondary response, which enables a quicker and more effective immune defense upon re-exposure to the antigen.
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Primary Immune Response
The primary immune response occurs when the immune system encounters a pathogen for the first time. It involves the activation of naive B and T cells, leading to the production of antibodies and memory cells. This response is slower, typically taking days to weeks, as the body is building its defense from scratch.
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6:59
Primary and Secondary Response of Adaptive Immunity
Secondary Immune Response
The secondary immune response happens upon subsequent exposure to the same pathogen. Memory B and T cells generated during the primary response quickly recognize the antigen, resulting in a faster and stronger production of antibodies. This rapid response often prevents reinfection or reduces disease severity.
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6:59Primary and Secondary Response of Adaptive Immunity
Immunological Memory
Immunological memory is the ability of the immune system to remember a previous encounter with a pathogen through memory cells. It enables a quicker and more effective response during secondary exposure. This concept explains why the secondary immune response is more rapid and robust compared to the primary response.
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7:56Naive T Cells Become Effector & Memory T Cells
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