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Chapter 21: The Immune System – Innate and Adaptive Body Defenses

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Introduction to the Immune System

  • Guided course
    Introduction to Immunity
    5:52
  • Guided course
    Antigens & Antibodies
    2:58

Introduction to Innate Immunity

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    Innate Immunity
    2:30
  • Guided course
    Map of the Lesson on Innate Immunity
    6:42

Introduction to First-Line Defenses

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    First-Line Defenses
    1:56
  • Guided course
    Map of the Lesson on First-Line Defenses
    1:37

First-Line Defenses: Chemical Barriers

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    Chemical Barriers
    1:09
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    Saliva
    1:36
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    Sweat Glands
    2:04

Introduction to Inflammation

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    Inflammation
    1:38
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    Chronic Inflammation
    3:09
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    Types of Inflammatory Response
    2:52

Steps of the Inflammatory Response

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    Step 4: Removal of Invading Microbes
    1:26
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    Step 3: Vasodilation
    2:39
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    Step 1: Tissue Damage & Infection
    2:38

Fever

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    Fever
    3:57

Interferon Response

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    Steps of the Interferon Response
    9:59
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    Interferons
    1:32

Introduction to the Complement System

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    Proteins of the Complement System
    4:16
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    Complement System
    4:25
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    Map of the Lesson on the Complement System
    3:25

Activation Pathways of the Complement System

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    Classical Pathway
    3:42
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    Lectin Pathway
    3:04
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    Alternative Pathway
    4:40

Review of the Complement System

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    Review of the Complement System
    5:15

Introduction to Adaptive Immunity

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    Primary vs. Secondary Lymphoid Organs
    5:08
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    Adaptive Immunity
    5:47
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    Map of the Lesson on Adaptive Immunity
    3:44

Antigens

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    Free Antigens vs. Presented Antigens on APCs
    4:11
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    Antigens
    3:59

Major Histocompatibility Complex Molecules

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    Major Histocompatibility Complexes
    2:31
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    Classes of MHC Molecules
    7:17

Introduction to T Lymphocytes

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    Cell-Mediated Immunity
    3:31
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    Cytotoxic T Cells vs. Helper T Cells
    5:58
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    Naive T Cells Become Effector & Memory T Cells
    7:56

Activation of T Lymphocytes

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    Comic Strip for T-Cell Activation
    3:29
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    T-Cell Activation
    7:33

Functions of T Lymphocytes

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    Functions of Cytotoxic T Cells
    6:21
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    Functions of Helper T Cells: Activation of Macrophages
    5:18
  • Guided course
    Types of Helper T Cells
    3:19

Introduction to B Lymphocytes

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    Naive B cells Become Effector (Plasma) Cells & Memory Cells
    4:23
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    B Cell Receptors
    4:37
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    Humoral Immunity
    3:55

Antibodies

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    Antibodies
    0:48
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    Antibody Diversity
    2:34
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    Antibody Structure
    5:40

Classes of Antibodies

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    IgA
    2:44
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    Classes of Antibodies
    4:43
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    IgM
    3:34

Outcomes of Antibody Binding to Antigen

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    Outcomes of Antibody Binding to Antigen
    9:16

Clonal Selection

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    Clonal Selection
    6:43

Primary and Secondary Response of Adaptive Immunity

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    Primary and Secondary Response of Adaptive Immunity
    6:59

Review of Adaptive Immunity

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    Review of Adaptive Immunity
    9:20