Ch.7 Flashcards

1
Q

what enhances host defense mechanisms

A

complement

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2
Q

complement proteins are synthesized where

A

liver

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3
Q

where are C1 components produced

A

intestinal epithelial cells

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4
Q

where is factor D made

A

adipose tissue

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5
Q

def? inactive precursors

A

zymogens

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6
Q

T. or F: most of the complement proteins zymogens

A

T

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7
Q

what is the end product of complement

A

lysis of invading cell

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8
Q

what amplifies inflammatory reactors

A

complement

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9
Q

does vascular permeability increase or decrease during complement

A

increase

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10
Q

what kind of cells do complement recruit during inflammation

A

monocytes and neutrophils

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11
Q

what are the 3 pathways for complement

A

classical, lectin, and alternative

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12
Q

what activates complement in the classical pathway

A

Ag-Ab complex

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13
Q

what activates complement in the alternative pathway

A

pathogen surface agent

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14
Q

what activates complement in the lectin pathway

A

lectin binding to pathogen surface (carbohydrates)

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15
Q

what do complement fragments act as

A

opsonins

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16
Q

def? a substance that makes other cells more susceptible to phagocytosis

A

opsonin

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17
Q

what is the 1st stage of complement

A

recognition unit

18
Q

what protein is involved in the recognition stage of complement

A

C1

19
Q

once C1 is fixed what are the next proteins activated

A

C4, C2, and, C3

20
Q

what proteins make up the activation unit

A

C4, C2, and C3

20
Q

what proteins make up the activation unit

A

C4, C2, and C3

21
Q

what is the most effective immunoglobulin of the classical pathway

A

IgM

22
Q

why is IgM the most efficient in the classical pathway

A

because it has multiple binding sites

23
Q

T or F: CRP, some viruses, mycoplasma, some gram – bacteria(E.coli) can also activate Classical Pathway

A

T

24
Q

what part of C1 binds the constant region of the Ab

A

C1q

25
Q

what part of C1 generate enzyme activity

A

2 C1r

26
Q

what complement protein is stabilized by Ca

A

C1

27
Q

what activates C1s

A

cleaving of thirster bond

28
Q

what ends the recognition stage of the classical pathway

A

activation of C1s

29
Q

what is the name of C5-C9

A

mmb attack complex

30
Q

what is the last unit the completes the lysis of the foreign particle

A

mmb attack complex

31
Q

what complement pathway is ab independent

A

lectin pathway

32
Q

what is the major constituent of the lectin pathway

A

mannose

33
Q

where is mannose found

A

in the cell wall of bacteria

34
Q

what complement pathway do babies use

A

lectin pathway

35
Q

what are the lectin and classical pathway the same

A

after C4 and C2 are cleaved

36
Q

what does the alternative pathway do for the other pathways

A

amplification loop for them

37
Q

T or f: the alternative pathway can be activated on its own

A

T

38
Q

what happens if you can not control complement

A

large amounts of tissue damage

39
Q

what regulates that infectious agents get destroyed and the rxn remains localized

A

plasma proteins

40
Q

what is the main step that stops complement

A

halting the accumulation of C3b