Escourrou P
INSERM CJF 89-09, hôpital Antoine Béclère, Clamart.
Arch Mal Coeur Vaiss. 1991 Jan;84 Spec No 1:53-7.
The circulation may be divided into several anatomical and functional segments placed in series. The vessels of distribution (great arteries) are designed to decrease the cardiac periodicity. The tone of the resistance vessels (arterioles) control the blood pressure. In situ changes of their diameter must be assessed with respect to variations in pressure in order to evaluate the active or passive mechanism of a physiological or therapeutic intervention. The vessels of exchange (capillaries, veinules) which have no smooth muscle in their walls are passively affected by changes in flow and transmural pressure. The capacitance vessels (veins) are partially affected by the blood flow entering this segment and influence the cardiac output by the effects of changes of volume on venous return to the heart.
循环系统可分为几个串联的解剖学和功能学部分。分配血管（大动脉）旨在降低心脏的周期性。阻力血管（小动脉）的张力控制血压。为了评估生理或治疗干预的主动或被动机制，必须根据压力变化评估其直径的原位变化。壁上无平滑肌的交换血管（毛细血管、微静脉）受血流和跨壁压力变化的被动影响。容量血管（静脉）部分受进入该部分的血流影响，并通过容积变化对静脉回心血量的影响来影响心输出量。
