器官的血液循環(huán)課件

1、3.2 Circulation of organs3.2.1 coronary circulation A. Anatomy feature of coronary circulation2022/10/121Left coronary artery -left atrium, left and right ventricular walls Anterior part of interventricular septumRight coronary artery -right atrium, right ventricle,Interatrial septum posterior part

2、of interventricular septum posterior part of left ventricle2022/10/122Distribute on the surface of the heartEnter the myocytes vertically Form net systemCapillary vessels:myocytes=1:1Difficult to form bypass circulation Cardiac diastole increases the blood of coronary artaryCardiac systole decrease

3、the blood flow 2022/10/123狗心動(dòng)周期中左右冠脈流量變化和特點(diǎn)0.51.0 Sec.1060100mmHg 80ml/min00主A血壓左冠狀A(yù)右冠狀A(yù)等容收縮射血期慢射血期舒張期2022/10/124一、冠脈循環(huán)右冠脈左冠脈后降支前降支冠狀動(dòng)脈心臟2022/10/125C. Regulation of coronary circulation*Metabolic productsdiastole coronary artery adenosine , H, lactic acid*neuroregulation vagus nerve-diastole sympath

4、etic nerve -systole diastole-isoprenaline*hormonal regulation 2022/10/127Blood flow of different organs when human is at restbrainorganliverStomach and intestinekidnaySkeletal muscleskinothertotalWeight (Kg)Percent of Weight(%)Blood flow(ml/min)Percent of Output(%)Percent of oxygen Consumption(%)1.4275014180.30.43225510heart1.52.2130023302.53.5100023300.30.43120