placentae

简明释义

英[pləˈsɛnteɪ]美[pləˈsɛnteɪ]

n. 胎盘（placenta 的复数形）

英英释义

单词用法

同义词

反义词

例句

1.The placentae in 10 cases of intrahepatic cholestasis of pregnancy (ICP) at full term were observed by light and electron microscopy, with placentae in 10 normal pregnancies as control.

本文对10例足 月妊娠肝内胆汁淤积症胎盘和10例同期 足 月胎盘进行了光镜和电镜对比观察。

2.The placentae in 10 cases of intrahepatic cholestasis of pregnancy (ICP) at full term were observed by light and electron microscopy, with placentae in 10 normal pregnancies as control.

本文对10例足 月妊娠肝内胆汁淤积症胎盘和10例同期 足 月胎盘进行了光镜和电镜对比观察。

3.Results:The data showed that patients with severe PIH were easy to suffer from abruptio, placentae intrauterine growth retardation(IUGR), fetal distress and acute left heart failure.

结果：资料显示重度妊高征患者易合并胎盘早剥、胎儿宫内发育迟缓、胎儿宫内窘迫和急性左心衰。

4.AIM: To prepare highly purified human trophoblast cells from human placentae at the first trimester of normal pregnancy for further study on the function of human placentae villi.

目的：培养纯度较高的人绒毛膜滋养层细胞，为胎盘绒毛在妊娠期间的作用及其机制研究提供细胞学基础。

5.Results:Pregnant complications was the main reason of dead fetus. Umbilical cord and placentae were the other reasons.

结果：妊娠并发症是胎死宫内的主要原因，其次是脐带因素及胎盘因素。

6.Objective: To Study of distinction between ultrasonography and clinical pathologic diagnose in abruption placentae.

目的研究胎盘早剥的超声诊断与临床病理之间的差异。

7.Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

8.Aim HBV could infect fetus through placentae, which is intrauterine transmission of HBV.

目的HBV可经胎盘引起胎儿感染，此即HBV宫内传播。

9.AIM To prepare highly purified functional human trophoblast cells from human placentae.

目的建立纯度较高的适于试验研究的人绒毛膜滋养层细胞。

10.Results: Among the 356 pregnant women, 310 successfully ejected placentae.

结果：310例患者顺利排出胎囊。

11.The doctor explained that the health of the placentae 胎盘 is crucial for fetal development.

医生解释说，胎盘的健康对胎儿发育至关重要。

12.In some cases, multiple placentae 胎盘 can develop in a pregnancy with twins.

在某些情况下，双胞胎妊娠中可能会形成多个胎盘。

13.Doctors monitor the placentae 胎盘 during ultrasounds to ensure they are functioning properly.

医生在超声波检查中监测胎盘以确保其正常功能。

14.The placentae 胎盘 provides essential nutrients and oxygen to the developing fetus.

胎盘为发育中的胎儿提供必需的营养和氧气。

15.After delivery, the placentae 胎盘 is often examined for any abnormalities.

分娩后，通常会检查胎盘是否有任何异常。

作文

The human body is a remarkable system, and one of its most fascinating components is the placentae. The placentae are vital organs that develop in the uterus during pregnancy, serving as a lifeline between the mother and the developing fetus. They play several crucial roles, including nutrient transfer, waste elimination, and gas exchange, ensuring that the fetus receives everything it needs to grow and thrive. Understanding the function of the placentae can deepen our appreciation for the complexities of human reproduction and development. The formation of the placentae begins shortly after conception when the fertilized egg implants itself into the uterine wall. As the embryo grows, it forms a connection with the mother through the placentae. This organ is composed of both maternal and fetal tissues, which allows for the exchange of nutrients and oxygen from the mother's blood to the fetus while also removing waste products from the fetal circulation. One of the most critical functions of the placentae is the transfer of nutrients. The fetus relies entirely on the mother for its nourishment, especially in the early stages of development. The placentae facilitates this process by allowing essential substances such as glucose, amino acids, and fatty acids to pass from the mother's bloodstream to the fetus. This transfer is not only crucial for growth but also for the development of vital organs and systems. In addition to nutrient transfer, the placentae also plays a significant role in gas exchange. Oxygen is essential for the survival of the fetus, and the placentae enables the transfer of oxygen from the mother's blood to the fetus while simultaneously removing carbon dioxide produced by the fetal metabolism. This exchange occurs through diffusion, a process that relies on the concentration gradients of these gases. Furthermore, the placentae serves as a protective barrier. While it allows the passage of necessary substances, it also helps shield the fetus from harmful pathogens and toxins present in the mother's blood. However, it is important to note that some substances, such as certain drugs and alcohol, can cross the placentae, which is why pregnant women are often advised to avoid certain medications and substances during pregnancy. The health of the placentae is crucial for a successful pregnancy. Conditions such as placental abruption, where the placenta detaches from the uterine wall prematurely, or placenta previa, where the placenta covers the cervix, can lead to serious complications for both the mother and the fetus. Regular prenatal care is essential to monitor the health of the placentae and ensure that any potential issues are addressed promptly. In conclusion, the placentae are extraordinary organs that play a vital role in the development of a fetus during pregnancy. They facilitate nutrient and gas exchange, provide protection, and are critical for the overall health of both the mother and the baby. Understanding the importance of the placentae not only enhances our knowledge of human biology but also emphasizes the need for proper prenatal care to ensure a healthy pregnancy and delivery.

人体是一个非凡的系统，其中最迷人的组成部分之一就是胎盘。胎盘是妊娠期间在子宫内发育的重要器官，充当母亲与发育中的胎儿之间的生命线。它们发挥几个关键作用，包括营养转移、废物排除和气体交换，确保胎儿获得生长和繁荣所需的一切。理解胎盘的功能可以加深我们对人类生殖和发育复杂性的欣赏。 胎盘的形成始于受精后不久，当受精卵植入子宫壁时。随着胚胎的生长，它通过胎盘与母亲形成连接。这个器官由母体和胎儿组织组成，这使得营养和氧气能够从母亲的血液转移到胎儿，同时也能从胎儿循环中去除废物。 胎盘最关键的功能之一是营养转移。胎儿完全依赖母亲提供养分，特别是在发育的早期阶段。胎盘通过允许葡萄糖、氨基酸和脂肪酸等基本物质从母亲的血液转移到胎儿来促进这一过程。这种转移不仅对生长至关重要，而且对重要器官和系统的发育也是如此。 除了营养转移外，胎盘还在气体交换中发挥重要作用。氧气对胎儿的生存至关重要，胎盘使氧气能够从母亲的血液转移到胎儿，同时去除胎儿代谢产生的二氧化碳。这种交换通过扩散发生，这是一个依赖于这些气体浓度梯度的过程。 此外，胎盘还充当保护屏障。虽然它允许必要物质的通过，但它也有助于保护胎儿免受母亲血液中存在的有害病原体和毒素的影响。然而，需要注意的是，某些物质，如某些药物和酒精，可以穿越胎盘，这就是为什么孕妇通常被建议在怀孕期间避免某些药物和物质。 胎盘的健康对成功妊娠至关重要。诸如胎盘早剥（胎盘过早从子宫壁脱落）或前置胎盘（胎盘覆盖宫颈）等情况可能会导致母亲和胎儿的严重并发症。定期产前护理对于监测胎盘的健康并确保及时解决任何潜在问题至关重要。 总之，胎盘是非凡的器官，在妊娠期间对胎儿的发展发挥着至关重要的作用。它们促进营养和气体交换，提供保护，并对母亲和婴儿的整体健康至关重要。理解胎盘的重要性不仅增强了我们对人类生物学的知识，还强调了适当产前护理的必要性，以确保健康的妊娠和分娩。