Week 9 - Adaptive Immunity Flashcards

1
Q

Adaptive Immunity Diagram

A
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2
Q

What are the 2 types of adaptive immunity?

A
  • Antibody Mediated (humoral)
  • Cell Mediated
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3
Q

What occurs in antibody mediated adaptive immunity?

A
  • B-Lymphocytes produce antibodies and with the help of T Lymphocytes, generate interactions for antibodies to neutralize, eliminate, or destroy foreign antigens
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4
Q

What is antibody mediated immunity responsible for?

A
  • body’s response to invading bacteria and viruses
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5
Q

Which cells are involved in the humoral response? (2)

A
  • Plasma and Memory B cells
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6
Q

Antibody Mediated Process diagram*

A
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7
Q

What are the antibodies/immunoglobulins secreted by B Lymphocytes? (5)

A
  • IgG
  • IgD
  • IgM
  • IgA
  • IgE
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8
Q

What is IgG? (2)

A
  • largest amount of circulating antibodies
  • heavily expressed on 2nd+ exposure to antigen
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9
Q

What is IgD?

A
  • Acts as a B-cell antigen receptor
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10
Q

What is IgM?

A
  • FIRST antibody produced from plasma cell with 1st exposure/immune response

If low exposure or tested too early

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11
Q

What is IgA? (2)

A
  • Secretory antibody that is present in high concentrations in the secretions of mucous membranes and the intestinal mucosa
  • Prevents infection in the upper and lower respiratory tracts, GI tract, and GU tract

Basically traps foreign materials

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12
Q

What is IgE? (2)

A
  • Associated with hypersensitivity reactions
  • forms a receptor on masts cells ana basophils and triggers histamine release during allergic reactions

So it attaches to mast cells on 2nd exposure, where mast cells release proinflammatory action

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13
Q

Which cells are included for cellular mediated immunity? (5)

A
  • T-lymphocytes
  • Cytotoxic T cells
  • Helper T cells
  • Regulatory T cells
  • Natural Killers
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14
Q

What do T cells do?

A
  • major role in regulating antibody mediated immunity and innate immunity
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15
Q

What do cytotoxic T cells do?

A
  • Destroy self cells infected by parasites
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16
Q

What do helper T cells (CD4 cells) do? (3)

A
  • 75% of all T-Lymphocytes
  • recognize self cells vs. non-self
  • When non-self is identified, they secrete cytokines that enhance WBC activity
17
Q

What do regulatory T cells do? (3)

A
  • Prevent hypersensitivity and overreactions on exposure to non self cells
  • This prevents formation of antibodies against normal cells (process in autoimmune diseases)
  • They secrete cytokines and have an overall inhibitory action on most cells
18
Q

What do natural killers do?

A
  • seek and destroy for unhealthy/abnormal self cells, such as cancer or virally infected