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BIOL 1620 {Exam 1} > Ch 43 > Flashcards

Ch 43 Flashcards

1
Q

Pathogen

A

Agent that causes disease

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2
Q

Innate immunity

A

Immediate defense
Present before pathogenic infection
Non-specific

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3
Q

Adaptive immunity

A

Activated after innate response (slow)
Response after pathogen infection
Very specific

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4
Q

Functions of Immune System

A

Protection from pathogens
Removal of dead or damaged tissue
Recognition and removal of abnormal cells

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5
Q

Primary Lymphoid tissue

A

Thymus gland and bone marrow

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6
Q

Secondary lymphoid tissue

A 
Spleen (removes RBC)
Lymph nodes (stored immune cells)
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7
Q

Autoimmune Diseases

A

Failure to distinguish between self and non self

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8
Q

Macrophages

A

Migrate through the body in organs/tissues

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9
Q

Neutrophils

A

Circulate in blood

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10
Q

Dendritic Cells

A

Stimulates development of adaptive immunity

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11
Q

Eosinophils

A

Discharge disruptive enzymes against parasites

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12
Q

Phagocytosis

A

Ingestion and digestion of a foreign body

Phagolysosomes

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13
Q

Inflammatory response

A

(1) mast cells release histamine; capillaries dilate
(2) neutrophils enter tissue
(3) phagocytosis

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14
Q

Cytokines

A

Secreted by immune cells to activate receptors on other cells

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15
Q

Fever

A

Immune cells release pyrogens which act on the hypothalamus to induce fever

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16
Q

NK Cells

A

Attack cancer and virus infected cells

17
Q

Antigens

A

Compound capable of activating an immune response

18
Q

Variable region

A

Antigen specific

19
Q

MHC molecules

A

Bind and transport antigen fragment to the cell surface

20
Q

T Cells binds both

A

Antigen fragment and MHC molecule

21
Q

Primary immune response

A

Proliferation and differentiation of B cells the first time the body is exposed to a particular antigen

22
Q

Vaccinations

A

Artificially introduce antigen to induce immune response

Protects against second immune response

BIOL 1620 {Exam 1} (8 decks)

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