Class 2 Flashcards

(50 cards)

1
Q

Apoptosis

A

programmed cell death

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2
Q

Necrosis

A

exogenously induced cell death

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3
Q

Most common necrosis

A

Coagulative

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4
Q

Coagulative necrosis occurs when

A

cell proteins altered

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5
Q

Ex. of coagulative necrosis

A

Heart attack

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6
Q

Coagulative necrosis typically occurs in

A

solid internal organs

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7
Q

What occurs during Liquefactive necrosis

A

Dead cells liquify

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8
Q

What happens to tissues from liquefactive necrosis

A

Become soft

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9
Q

Where liquefactive necrosis occurs most?

A

Brain

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10
Q

Where caseous necrosis typically found

A

In tuberculosis

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11
Q

What happens to tissue from caseous necrosis

A

Become cheesy and yellow

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12
Q

What Fat necrosis causes

A

Form of liquefactive necrosis limited to fat tissue

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13
Q

Gangrene

A

dead tissue

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14
Q

lysis means

A

Dissolution of cell

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15
Q

What form of cell death is Apoptosis

A

Active form, highly regulated

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16
Q

Inflammation is

A

Response to tissue injury

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17
Q

Pathogenesis of inflammation involves how many steps

A

4

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18
Q

Pathogenesis of inflammation step 1:

A

Changes in circulation of blood

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19
Q

Pathogenesis of inflammation step 2

A

Changes in vessel wall permeability

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20
Q

Pathogenesis of inflammation step 3

A

Release of soluable mediators of inflammation

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21
Q

Pathogenesis of inflammation step 4

A

Cellular events – leukocyte emigration/Phagocytosis

22
Q

Histamine released from

A

Platelets and mast cells

23
Q

Histamine increases?

A

Blood vessel permeability

24
Q

Bradykinin is what?

A

Plasma protein

25
Bradykinin does what?
similar to histamine/slower/incites pain
26
Complement System is
Group of plasma proteins from liver/ inactive
27
Activation of complement system leads to
Biologically active fragments, intermediate complexes, membrane attack complex
28
Opsonization
Phagocytosis of bacteria
29
Anaphalaxis
histamine release w/ increased permeability
30
Chemotaxis
Migration of leukocytes
31
Cell lysis happens through
MAC
32
Arachidonic Acid (AA) Derivatives derived from
Phospholipids of cell membranes
33
AA metabolized through
Lipoxygenase pathway Cyclooxygenase pathway
34
Leukotrienes
Promote chemotaxis
35
Lipoxins
Inhibit chemotaxis
36
Prostaglandins
Cause vasodilation
37
Prostacyclin
counters thromboxane
38
Thromboxane
Platelet aggregation
39
Emigration of leukocytes increases? how long?
Permeability of vessel wall/ up to several hours
40
As scavengers, PMNs do what?
Uptake cellular debris/bacteria
40
Phagocytosis causes PMNs to
Lose mobility, act as scavengers
41
Neutrophils (PMN) are the
Most numerous circulating WBCs
42
Eosinophils are prominent in
Allergic reactions
43
Basophils are prominent in
Allergic reactions mediated by IgE
44
Macrophages appear after how long?
3-4 days after onset
45
Macrophages are
Phagocytic and bactericidal
46
Platelets
fragments of cytoplasm from megakaryocytes
47
Transudate
Fluid that passes through membrane
48
Exudate
Fluid released from body
49
Chemotaxis moves WBC's...
Up and along concentration gradient