●● ●●●● ●● ●●0 ●●● ●●●● heart wall myometrium base of heart epicardium ( visceral pericardium fibrous pericardium pex of heart
●●●●● ●●●● ●●0 eft common carotid arter left subclavian artery vena cava -left pulmonary arteries pu monary trunk veins oft annum right atrum -left cardiac vein supenor pulmonary ight coronary eft coronary cardiac nght antenor vena cava artery
●●●●● ●●●● ●●0 ●●● ●● left common carotid artery brachioce phatic artery left subclavian artery vena cava aona nght -left pulmonary arteries arenas pulmonary trunk oxygen.nch blood oxygen-poor blood veins semilunar to lungs ht otium ntnoventriculat spid) valve blood papillary muscles inferior vena cava blood from
心脏橫切面图示瓣膜 ●●●●● ●●●● ●●0 Pulmonic ●●●● semilunar valve 大动脉辫(3个半月)°° Aortic 肺动脉辨(3个半月辫) semilunar valve 左房蜜辫「二尖辫) Bicuspid valve into left ventricle)右房室辫(三尖辫) Tricuspid valve (into right Figure 45.9 In the human heart, atrioventricular valves separate the atria from the ventricles; they are connected to papillary muscles, which keep them from opening backwards into the atria Semilunar valves at the base of the pulmonary artery and aorta open during systole and close when the pressure in these arteries exceeds the pressure the ventricl
大动脉瓣(3个半月瓣） 肺动脉瓣(3个半月瓣） 左房室瓣（二尖瓣） 右房室瓣（三尖瓣） 心脏横切面图 示瓣膜
●●●●● ●●●● ●●0 pulmonary semilunar ●●●● valve aortic semilunar valve opening o tricuspid valve coronary artery bicuspid valve fibrous connective tissue