烟声走华利大辱 gqing Med山eal Universi 1.vascular changes (1)changes in vascular caliber and flow A.Transient arteriolar constriction B.Persistent vasodilatation arteriolar dilatation-blood flow rapidly capillary dilated-resulting in locally increased blood flow C.blood flow slowly ■Hyperemia -stasis
1. vascular changes (1) changes in vascular caliber and flow A.Transient arteriolar constriction B. Persistent vasodilatation ◼ arteriolar dilatation—blood flow rapidly ◼ capillary dilated- resulting in locally increased blood flow C. blood flow slowly ◼ Hyperemia stasis
重麦等科大学 nongging Medical University vasodilatation mechanism: -Axon reflex -chemical mediators
◼ vasodilatation mechanism: -Axon reflex - chemical mediators
国重走等种大号 ongqing Medical University (2) Increased vascular permeability Mechanism of increased vascular permeability: a.Endothelial cell contraction occurs rapidly usually short-lived (15-30 minutes); called the immediate transient response
(2) Increased vascular permeability Mechanism of increased vascular permeability: a. Endothelial cell contraction occurs rapidly usually short-lived (15-30 minutes); called the immediate transient response
圈 重麦等科大学 nongging Medical University b.Direct endothelial injury persists for several hours (or days) immediate sustained response. c.Leukocyte-dependent injury ■ late response long-lived (hours)
b.Direct endothelial injury ◼ persists for several hours (or days) ◼ immediate sustained response. c. Leukocyte-dependent injury ◼ late response ◼ long-lived (hours)
国重走普升大子 ongqing Med山cal University d.Increased transcytosis e.Leakage from new blood vessels Meanwhile, the intravascular colloid osmotic pressure ■ the interstitial fluid colloid osmotic pressure t
d.Increased transcytosis e. Leakage from new blood vessels Meanwhile, ◼ the intravascular colloid osmotic pressure ◼ the interstitial fluid colloid osmotic pressure