范文一:人体心脏结构图
心脏的解剖结构简述
心位于胸腔内,左右两肺之间。收缩时如本人的拳头大小。心的前上面邻胸骨和肋软骨;后面为食管和胸主动脉;下面紧贴膈肌,上面为进出心脏的上腔静脉、主动脉和肺动脉。心表面有三条沟,冠状沟为心房与心室的表面分界,前、后纵沟为左右心室的表面分界。
心是一个中空的器官,其内部分为四个腔。上部两个为心房,由房中隔分为左心房和右心房;下部两个为心室,由室中隔分为左心室和右心室。左右心房之间,左右心室之间互不相通,而心房与心室之间有房室口相通。
(一)右心房占心脏的右部,有三个入口一个出口。右心房的上方有上腔静脉口,后下方有下腔静脉口,全身的静脉血由此两口入右心房。在下腔静脉口与右房室口之间有冠状窦口,口缘有镰状的冠状窦瓣为界。心壁本身的静脉血由此入右心房。在右心房和右心室相通的地方有一个出口,称右房室口,右心房的血液经此口流入右心室。
(二)右心室占心脏的前部。有一个入口,即右房室口。有一个出口,即它上方的肺动脉口。右房室口的上缘上附着三块三角形的瓣膜称三尖瓣。当心室收缩时,挤压室内血液,血液冲击瓣膜。三尖瓣关闭,血液不倒入右心房。右心室的前上方有肺动脉口,右心室的血液由此送入肺动脉。肺动脉口缘上有三块半月形的瓣膜称肺动脉瓣(半月瓣),当心室舒张时,肺动脉瓣关闭,血液不倒流入右心室。
(三)左心房左心房占心脏的后部。在其后壁上有四个入口,即肺静脉口,每侧各两个。由肺进行气体交换后的新鲜血液,经肺静脉流入左心房。有一个出口称左房室口,血液由左心房经此口流入左心室。
(四)左心室左心室占心脏的左后部,有一个入口,即左房室口,左心房的血液经左房室口入左心室。左房室口有二尖瓣,防止左心室的血液倒流回左心房。在左心室上方有一个出口,即主动脉口,左心室的血液经此口流入主动脉。左心室承担着全身血液输送的功能,所以左心室的肌层较右心室的肌层发达约为右心室壁厚的三倍,左心室的主动脉口也有三个半月瓣,称为主动脉瓣。起着防止主动脉内的血液倒流入左心室的作用。
心脏结构图
心脏:膈面观
心藏瓣膜的类型
心藏解剖图
心脏的外形和血管(前面观)
心脏的外形和血管(后面观)
心脏的外形和血管
心藏解剖图
心脏解剖图
人体心脏结构图
范文二:人体心脏结构图
人体心脏结构图
人体心脏结构图1,正面观
人体心脏结构图2,背面观
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人体心脏结构图3,内视图
人体心脏结构图4
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人体心脏结构图5
人体心脏结构图6,胸部及心脏
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心脏是中空的肌性器官,位于胸腔的中纵隔内。其外形近似前后略扁的圆锥体,心尖指向左前下方,心底朝向后上方,心的长轴斜行,与人体正中线成45度角。心脏的内部分为右心房、右心室、左心房和左心室四个腔室,心房位于心脏的上部,心室位于下部;两房之间以房间隔,两室之间以室间隔分隔。心房和心室之间经房室口相通;房室口附有房室瓣,右心房、右心室间为三尖瓣,左心房、左心室间为二尖瓣。右心房与上、下腔静脉相接,右心室发出肺动脉;左心房与肺静脉相接,左心室发出主动脉。全身血液经上、下腔静脉回流到右心房,再经三尖瓣进入右心室,由右心室射入肺动脉。肺内血液经肺静脉回流左心房,再经二尖瓣进入左心室,最后由左心室射入主动脉,供应全身组织、器官。
体循环开始于左心室。血液从左心室搏出后,流经主动脉及其派生的若干动脉分支,将血液送入相应的器官。动脉再经多次分支,管径逐渐变细,血管数目逐渐增多,最终到达毛细血管,在此处通过细胞间液同组织细胞进行物质交换。血液中的氧和营养物质被组织吸收,而组织中的二氧化碳和其他代谢产物进入血液中,变动脉血为静脉血。此间静脉管径逐渐变粗,数目逐渐减少,直到最后所有静脉均汇集到上腔静脉和下腔静脉,血液即由此回到左心房,从而完成了体循环过程。
肺循环自右心室开始。静脉血被右心室搏出,经肺动脉到达肺泡周围的毛细血管网,在此排出二氧化碳,吸收新鲜氧气,变静脉血为动脉血,然后再经肺静脉流回左心房。左心房的血再入左心室,又经大循环遍布全身。这样血液通过体循环和肺循环不断地运转,完成了血液循环的重要任务
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范文三:人体心脏结构图
人体心脏结构图(转载)(转载) zxj701204 收录于2010-11-05
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check
范文四:人体心脏结构图
人体心脏结构图(转载)(转载) zxj701204 收录于2010-11-05
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
for computer software engineering GB/T50314-2000 of electrical installations code for construction and acceptance of GBJ232- 92 intelligent building weak design construction figure set GJBT-471 2. system description this times engineering weak design including: hours a Kok information facilities system integrated wiring system (containing room network, communications part) wired TV system information guide and the released system hours II Kok public security system fire automatically alarm system (containing public broadcast part) security technology prevention system security monitoring system out entrance control system car library management system hours three Kok building equipment monitoring system hours four Kok information application system queued station ICU visitation system operation the system monitoring and training system call intercom system hours, five hours Kok Kok intelligent integrated system of information system (1) cabling systems (including computer room network, communication component) computer network systems and voice communications systems Center of information on medical floor computer room located in the engine room. Voice communication system using a local telecommunications operator providing voice service, configuration-independent integrated services digital program-controlled switchboards. Operators providing communications ... If any compatibility requirements, by way of increased access to the Communications Board within the chassis to meet
范文五:人体心脏结构图
人体心脏结构图(转载)(转载) zxj701204 收录于2010-11-05
谣言:吃太咸了会得病,
导语:“人体每日摄入食盐不应过多,否则易患多种疾病。”这是真的吗,
吃太咸了会得病,
一、 网友评论:
1、 网友:冰冰 23 岁行政助理
我就是一个”重口味“的人,但身体很健康啊~
我就是一个特别爱吃咸的人,什么咸菜、咸烧饼都是我的最爱。大家都说吃太咸对身体不好,可我一点没这么觉得。前几天我还到医院去体检,各项指标都很正常。吃咸不会得病的~
2、 网友:小帅 34岁 销售
邻居家大爷常年吃太咸,结果得了心血管病。
邻居家有个大爷经常吃咸的东西,大家都劝他不要吃这么咸,可他就是不听。后来他被检查出了心血管疾病,我想这和常年吃咸有很到关系。
世界卫生组织建议每人每天钠盐摄入量不超过5克
二、 专家解答:
1、 世界卫生组织建议每人每天钠盐摄入量不超过5克。
世界卫生组织(WHO)建议每人每天钠盐摄入量不超过5克,而我国现在每人每日食盐约12克、美国提倡的人均2.3克/天宽松了许多。
2、 高盐饮食会导致高血压。
营养专家原表示,高盐饮食是高血压的三大原因之一,高盐饮食是我国高血压的最重要的危险因素。古人就知道“味过于咸,大骨气劳,短肌,心气抑”,即多食咸会影响血液和血液循环,伤及骨骼,并使心功能受到抑制。盐摄入平均每增加2克,收缩压和舒张压就分别增加2.0mmHg和1.2mmHg。
“有的人以为‘不吃盐没力气’,这是没有道理的。”专家表示,人对钠盐的依赖,只是长期以来味觉适应了高盐。除此之外,吃盐还包括酱料、酱油、零食里的盐,因此不放盐放酱油的做法,也同样会摄取盐分。
我们正常人钠的摄入量和排出量时刻处在一个比较平衡的状态,而且钠的排出主要通过我们的肾脏。如果在日常生活中摄入过多的盐分,钠的摄入量就会增加,这就给肾脏排除钠的功能增加负担。如果摄入钠的量过多的话,为了保证肾脏的正常功能,也为了保持钠在血液中的浓度不变,就需要多喝水,不过水喝太多的话就会使得血液中的水分有所增加,这就形成了“水钠潴留”的状态。这种状态就好比一个装满水的气球,水越多的话,气球产生压力就会越大,久而久之就会导致高血压的出现。这就是吃得太咸会引发高血压出现的原因,主要是钠在作怪。与此同时,如果血容量过大,加重心脏负荷,再加上自身的血管狭窄的话,就有引发冠心病的可能。
吃太咸还可能给身体带来多种疾病
3、吃太咸还可能给身体带来多种疾病。
肝肾疾病。摄入过多盐会超过肝肾代谢的承受力,加重心血管压力,血压越高,肝肾血流量越少,肝肾功能损害越大,易导致慢性疾病。
呼吸道炎症。高浓度食盐不仅抑制呼吸道细胞活性,降低其抗病能力,还会减少唾液,使口腔内溶菌酶减少,难以抵抗病毒感染。
胃癌。食盐中的高渗透液会破坏胃黏膜,一些腌菜、盐渍食品中所含亚硝酸盐在胃酸和细菌作用下会转变为亚硝胺,易致胃癌。
皮肤老化。体内钠离子增加会导致面部细胞失水,皱纹增多。
肥胖。英国通过对1600多名青少年进行研究发现,吃盐越多,甜饮料喝得越多,很容易带来肥胖问题。
骨质疏松。食盐主要成分是钠,人体每排泄1000毫克钠,大约会耗损26毫克钙。吃盐越多,钙越少。
吃黄瓜鸡蛋1周掉10斤 饭后吃啥排出体内致癌物 这样吃萝卜一冬不生病 几种零食一辈子都不要吃 吃火锅时少点5类蔬菜 防肝癌注意两吃两不吃