英语翻译Right AtriumThe right atrium receives systemic venous bl

英语翻译
Right Atrium
The right atrium receives systemic venous blood from the superior vena cava,which drains the upper portion of the body,and from the inferior vena cava,which drains the lower portion.The coronary sinus is an additional opening into the right atrium that receives venous blood from the myocardium of the heart itself.
Right Ventricle
Blood from the right atrium passes through the right atrioventricular (AV) valve (also called the tricuspid valve) to fill the right ventricle.The right AV valve is characterized by three valve leaflets,or cusps.Each cusp is held in position by strong tendinous cords called chordae tendineae .The chordae tendineae are secured to the ventricular wall by cone-shaped papillary muscles.These structures prevent the valves from everting,like an umbrella in a strong wind,when the ventricles contract and the ventricular pressure increases.
Ventricular contraction causes the right AV valve to close and the blood to leave the right ventricle through the pulmonary trunk and to enter the capillaries of the lungs via the right and left pulmonary arteries.The pulmonary valve (also called the pulmonary semilunar valve) lies at the base of the pulmonary trunk,where it prevents the backflow of ejected blood into the right ventricle.
Left Atrium
After gas exchange has occurred within the capillaries of the lungs,oxygenated blood is transported to the left atrium through two right and two left pulmonary veins.
Left Ventricle
The left ventricle receives blood from the left atrium.These two chambers are separated by the left atrioventricular (AV) valve (also called the bicuspid valve or mitral valve).When the left ventricle is relaxed,the valve is open,allowing blood to flow from the atrium into the ventricle; when the left ventricle contracts,the valve closes.Closing of the valve during ventricular contraction prevents the backflow of blood into the atrium.
The walls of the left ventricle are thicker than those of the right ventricle because the left ventricle bears a greater workload,pumping blood through the entire body.The endocardium of both ventricles is characterized by distinct ridges called trabeculae carneae .Oxygenated blood leaves the left ventricle through the ascending portion of the aorta.The aortic valve (also called the aortic semilunar valve),located at the base of the ascending portion of the aorta,closes as a result of the pressure of the blood when the left ventricle relaxes,and thus prevents the backflow of blood into the relaxed ventricle.
在这先谢谢了哦,

右心房
右心房接受系统性的静脉血由上腔静脉,排水渠上的部分尸体,并从下腔静脉,排水渠较低的部分.冠状窦是一项额外的开放进入右心房接收静脉血由心肌心脏本身.
右心室
血液由右心房通过正确的房室（影音）阀（也称为三尖瓣） ,以填补右心室.权利的AV阀的特点是由三个瓣叶,或咬头.每个尖点是举行的立场,强烈的腱索所谓的索tendineae .该索tendineae是担保向室壁由锥形乳头肌.这些结构,防止阀从everting ,像一把雨伞,在强风时,脑室合同和心室压力增加.
心室收缩的原因权的AV阀关闭和血液离开右心室通过肺动脉干和进入毛细血管肺经左,右肺动脉.该肺动脉瓣（也称为肺半月阀）是在该基地的肺动脉干,它可以防止回流的跳伞血液进入右心室.
左心房
之后,气体交换已发生毛细血管的肺部,含氧血是运到左心房,通过两个权利和2左肺静脉.
左心室
左心室的血液从收到的左心房.这两个商会是分开的,由左房室（影音）阀（也称为二叶瓣或二尖瓣） .当左心室放宽,阀门打开,让血液流从心房到心室;时,左心室的合同,阀关闭.截止阀在心室收缩,防止血液回流到心房.
墙壁左心室厚比那些右心室,因为左心室负有更大的工作量,抽水的血液通过整个车身.该内膜两心室的特点是鲜明的山脊,所谓的小梁carneae .含氧血叶左心室通过升部分的主动脉.主动脉瓣（也称为主动脉半月瓣） ,设在该基地的上升部分的主动脉,关闭是由于血液压力时,左心室放宽,从而阻碍了血液回流到放宽脑室.