16. 16
X Stuart-Power
factor
Gan 1,25 Serine
protease
X
I
Rosenthal
factor
Gan 2,5-3,3 Serine
protease
X
II
Hageman
factor
- Serine
protease
X
III
Fibrin
stabilizing factor
Gan 9-10 ngμy Transglutami
nase
* Prekallikrein - Serine
protease
* High
Molecular
Weight
Kininogen
(HMWK hoÆc
HK)
- Cofactor
Ghi chó: C¸c yÕu tè III cò (thromboplastin); yÕu tè IV (canxi); yÕu tè VI
(accelerin).
C¬ chÕ ®«ng m¸u: qu¸ tr×nh ®«ng m¸u x¶y ra theo hai ®−êng: néi sinh vμ ngo¹i
sinh. Hai con ®−êng nμy chØ kh¸c nhau ë giai ®o¹n h×nh thμnh yÕu tè X ho¹t ho¸.
(xem s¬ ®å ®«ng m¸u).
17. 17
S¬ ®å ®«ng m¸u
HÖ thèng néi sinh HÖ thèng ngo¹i sinh
HMWK
prekallikrein
XII XIIa
HMWK TF
XI XIa
IX IXa VIIa VII
PL Ca++
Ca++
PL
VIIIa TF
X Xa
PL
Ca++
V
Prothrombin Thrombin
Fibrinogen Fibrin