文本讲义讲稿1bhawani circulatory system chinese

1、The Circulatory SystemTitle Page循环系统Introduction 简介It is a transportation system by which oxygen and nutrients reach the bodys cells, and waste materials are carried away. It also carries substances called hormones, which control body processes, and antibodies to fight invading germs. 这个系统将氧气和营养物质运送

2、到全身各细胞，同时将代谢废物排出体外。它也运送一种叫荷尔蒙的物质，荷尔蒙控制身体的运作帮助身体抵御细菌的入侵。The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system. 心脏，肺，和血管共同形成循环系统的循环Parts of the Circulatory System循环系统的几个部分Divided into three major parts:分为三个主要部分The Heart The Blood 心脏 血液 The Blood Ve

3、ssels 血管The Heart 心脏Size of your fist 自身拳头大小Thick muscular walls 厚实的肌肉壁Divided into two pumps划为两个心脏“泵” Each pump has two chambers 每个“泵” 各有两个“房间”Upper chamber - atrium receives blood coming in from the veins 上半部分是心房，静脉血流入此处Lower chamber - ventricle squeezes blood out into the arteries 下半部分是心室，血液挤出心脏流

4、进动脉Blood Vessels血管Hollow tubes that circulate your blood血管是提供血液环流的中空管道Three Kinds of Blood Vessels 三种血管 Arteries Veins Capillaries动脉 静脉 毛细血管 Arteries动脉Carry blood AWAY from the heart动脉将血液输出心脏Heart pumps blood 心脏搏出血液Main artery called the aorta 主干动脉称为主动脉Aorta 主动脉Aorta divides and branches 主动脉有各个分支Man

5、y smaller arteries 许多更小的动脉Each region of your body has system of arteries supplying it with fresh, oxygen-rich blood.你身体的每个部位都有动脉系统，提供新鲜富含氧气的血液。Have strong, muscular wallsThe inner layer is very smooth so that the blood can flow easily 动脉有强壮的肌肉管壁，血管内层十分光滑有利于血液顺畅流动Veins静脉Carry blood to the heart将血液运往

6、心脏Receive blood from the capillaries从毛细血管接收血液Transport waste-rich/ oxygen-poor blood back to the lungs and heart 将充满代谢废物的血液运送至肺部和心脏Capillaries毛细血管Very thin非常细Connect arteries & veins 连接动脉和静脉Food and oxygen released to the body cells食物和氧气通过毛细血管进入全身细胞 Carbon dioxide and other waste products returned t

7、o the blood stream二氧化碳以及其它代谢废物通过毛细血管回到血流中Valves are located inside the veins. The valves only allow blood to move in one direction. 静脉内壁有静脉瓣，可防止血液倒流Blood血液Red blood cells carry oxygen from the lungs to all the cells of the body. Takes carbon dioxide and transports it back to the lungs. 血红细胞即红血球将肺部的氧

8、气运送到全身各部位,吸收二氧化碳并将其运送回肺部About 5,000,000 Red Blood Cells in ONE drop of blood. 一滴血液中有5百万红血球Red Blood CellsWhite blood cells白细胞White blood cells protect the body from germs. Attack and destroy germs when they enter the body白细胞保护身体不受细菌的侵害并能抵御和杀死入侵的细菌White Blood Cells白细胞Platelets血小板Platelets are blood c

9、ells that help stop bleeding 血小板是一种可以止血的血细胞Plasma血浆Plasma is the liquid part of the blood血浆是除血细胞外的液体物质About half of your blood is made of plasma占身体血液的一半The plasma carries the blood cells throughout the body血浆运送全身的血细胞运行Plasma is made in the liver. 在肝脏中生成3 Kinds of Circulation:Pulmonary circulation 肺循

10、环Coronary circulation 冠脉循环 Systemic circulation 体循环Pulmonary Circulation肺循环Movement of blood from the heart, to the lungs, and back to the heart again 血液从心脏流出，进入肺部，再流回心脏Blood from the right side pump is dark red and low in oxygen. Travels through pulmonary arteries to lungs where it gets fresh oxyge

11、n and es bright red. 右边泵里的血液是暗红色的，含氧量低通过肺动脉到达肺部进行代谢，吸收新鲜氧气后变为鲜红色Blood from lungs through pulmonary veins back to the hearts left side pump. Pumped out into the body.新鲜的血液经肺静脉从肺部流出进入心脏左边的泵，再由泵搏出心脏Coronary Circulation冠脉循环 Movement of blood through the tissues of the heart 血液在心脏组织中的流动Systemic Circulati

12、on体循环Supplies nourishment to all of the tissue located throughout the body , except for the heart and lungs除了心脏和肺部以外，为全身的组织提供营养Blood Flow to Arms 手臂血液循环Oxygen rich blood leaves the heart and travels through arteries含氧高的血液从心脏流出进入动脉In the capillaries the oxygen and food is given to the bodys cells氧气和营

13、养物质通过毛细血管进入细胞The blood finally travels back through veins to the heart to pick up oxygen血液最后通过静脉回流到心脏来吸收氧气ARTERIES- FROM HEARTCAPILLARIESVEINS- TO HEARTPulmonary Vein 肺静脉Aorta 主动脉Brachial Artery 臂动脉Renal Artery 肾动脉Radial Artery 桡动脉Ulnar Artery 尺动脉 Iliac Artery 髂动脉 Path to the ExchangeBlood Flow to Legs腿部血液循环Conclusion 总结 As you have learned (Hopefully) the Circulatory System is one of the most important systems in the human bodyIt is the only reason youre still alive todayand you can attribute the coo