6.3 Flashcards

1
Q

thrombin activation occurs through?

A

intrinsic and extrinsic pathway

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2
Q

Intrinsic pathway will happen after

A

endothelial damafe and collagen exposure

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3
Q

Describe Intrinsic pathway players

A
XII
XI
IX
VIII
calcium
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4
Q

Extrinsic pathway will happen after

A

tissue trauma

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5
Q

Describe Extrinsic pathway players

A

TF
VII
calcium

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6
Q

where can we find TF?

A

on cells that are not present in contact with blood

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7
Q

Describe Extrinsic pathway mechanism

A

VII become in contact with TF -> VIIa

togather they convert X -> Xa

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8
Q

describe the prothrombinase complex

A

Xa forms a complex with Va

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9
Q

job of the prothrombinase complex

A

prothrombin -> thrombin

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10
Q

how does the Intrinsic pathway activate?

A

XII -> XIIa by negative charges (collagen)

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11
Q

Describe Intrinsic pathway mechanism

A

XIIa -> XI -> XIa -> IX -> IXa -> X -> Xa with VIIIa

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12
Q

Intrinsic tenase complex?

A

IXa with VIIIa acts on X

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13
Q

what else can activate the intrinsic pathway?

A

extrinsic tenase complex

at factor IX

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14
Q

what else activates factor XI?

A

Thrombin

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15
Q

describe Fibrin formation

A

thrombin converts fibrinogen dimers into fibrin monomers -> fibrin monomers polymerize to form fibrin fibers

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16
Q

activation of XIII?

A

by thrombin

17
Q

what is XIII?

A

Transglutaminase

18
Q

what do Plasminogen binds?

A

Lysine residues on the Fibrin mesh

19
Q

what will happen after bonding of Plasminogen to Fibrin?

A

tPA and uPA factors will activate Plasminogen to Plasmin which will cut Fibrin to smaller pieces

20
Q

what will inhibit plasminogen activation by tPA?

A

PAI-1

21
Q

what is the primary inhibitor of Plasmin?

A

a2-plasmin inhibitor

22
Q

what will TAFI do?

A

will remove Lysine residues from Fibrin

23
Q

Physiological Anti-coagulants

A

Activated protein C
Antithrombin
TFPI

24
Q

important functions of Thrombin?

A
fibrinogen -> fibrin
XIII -> XIIIa
platelets activation
TAFI activation
activstes V, VIII, XI
activated protein C with Thrombomodulin
25
Q

factors produced by endothelial cells

A
PGI2
NOvWf
Thrombomodulin
tPA
PAI-1