cloaca

简明释义

英[kləʊˈeɪkə]美[kloˈekə]

n. 泄殖腔；阴沟；下水沟

复 数 c l o a c a e 或 c l o a c a s

英英释义

单词用法

同义词

反义词

例句

1.Results: At 18th day of incubation, ureteric bud from cloaca grew into metanephrogenic tissue which produced many metanephrogenic vesicles.

结果：孵育第18天，从泄殖腔附近发出的输尿管芽向生后肾组织侵入生长，生后肾组织产生许多生后肾小泡。

2.Don't have a chat with unknown men and don't answer any accost s. especially don't call gasman box lunch or call to repair you cloaca.

不要和陌生男人聊天和接受他们的搭讪。特别是不要叫送煤气的送外卖的还有修下水道的。

3.It originates from the wall of the cloaca directly in front of the vent on the belly side, and curls backwards so the shaft and head lies directly beneath the vent opening.

它起源于泄殖腔壁侧面直接在前面的肚皮上发泄，和卷发向后使轴与头部直接位于下方的通风口开幕。

4.Objective:To observe the distribution of nerves containing neuropeptide Y (NPY) and substance P(SP) in cloaca wall of Alligator sinensis.

目的 ：观察含神经肽Y（NPY）、P物质 （SP）神经在扬子鳄泄殖腔壁内的分布情况。

5.The 4-week-old turkeys were infect by the suspension of infectious eggs through the cloaca and oral infection, contrast to oral infection with the Heterakis fresh egg, female Heterakis and earthworms.

用此感染性虫卵悬液通过泄殖腔和口腔接种感染4周龄的火鸡、未培育的新鲜虫卵和异刺线虫雌虫感染火鸡、以及来自三个地方的蚯蚓感染火鸡相对比。

6.The objective is to observe the distribution of nerves containing neuropeptide Y in cloaca wall of Alligator sinensis.

目的是观察含神经肽Y在扬子鳄泄殖腔壁内的分布情况。

7.Objective To study the application of total urogenital mobilization in the repair of cloaca.

目的探讨应用泄殖腔整体游离术治疗低位一穴肛。

8.The 4-week-old turkeys were infect by the suspension of infectious eggs through the cloaca and oral infection, contrast to oral infection with the Heterakis fresh egg, female Heterakis and earthworms.

用此感染性虫卵悬液通过泄殖腔和口腔接种感染4周龄的火鸡、未培育的新鲜虫卵和异刺线虫雌虫感染火鸡、以及来自三个地方的蚯蚓感染火鸡相对比。

9.During the examination, the veterinarian noted the condition of the cloaca in the turtle.

在检查过程中，兽医注意到了乌龟的泄殖腔状况。

10.Some reptiles use their cloaca to absorb water, helping them survive in arid environments.

一些爬行动物利用它们的泄殖腔吸收水分，帮助它们在干旱环境中生存。

11.In birds, the waste is expelled through the cloaca, which serves as a common exit for excretory and reproductive systems.

在鸟类中，废物通过泄殖腔排出，它作为排泄和生殖系统的共同出口。

12.The anatomy of amphibians includes a cloaca that plays a role in both digestion and reproduction.

两栖动物的解剖结构包括一个泄殖腔，在消化和繁殖中起着重要作用。

13.The cloaca is an important feature for understanding the evolutionary biology of vertebrates.

了解脊椎动物的进化生物学时，泄殖腔是一个重要特征。

作文

The term cloaca refers to a common cavity at the end of the digestive tract for the release of both excretory and genital products in certain animals. This anatomical feature is particularly prominent in reptiles, birds, amphibians, and some fish. The cloaca serves as a multifunctional opening that plays a crucial role in the reproductive and excretory systems of these organisms. Understanding the structure and function of the cloaca can provide insights into the evolutionary adaptations of various species. In many vertebrates, the cloaca acts as a single exit point for waste materials, urine, and reproductive cells. For example, in birds, the cloaca is involved in the laying of eggs as well as the expulsion of feces. This unique adaptation allows birds to conserve water and maintain a lightweight body structure, which is essential for flight. The efficiency of having a single opening for multiple functions is a remarkable evolutionary trait that has been observed in several animal groups.Furthermore, the presence of a cloaca can also indicate the evolutionary lineage of certain species. For instance, reptiles and birds are thought to have evolved from common ancestors that possessed this structure. The study of the cloaca in these animals can help scientists understand the transition from aquatic to terrestrial life, as it reflects significant changes in reproductive strategies and adaptations to different environments.In addition to its biological significance, the cloaca has cultural implications as well. In some societies, the reproductive habits of animals with a cloaca have sparked curiosity and fascination. For instance, the mating rituals of frogs and other amphibians often involve the use of the cloaca in a process known as amplexus, where the male grasps the female to ensure successful fertilization. This behavior highlights the importance of the cloaca not only in reproduction but also in the survival of species.Moreover, studying the cloaca can have practical applications in medicine and veterinary science. Understanding how this organ functions in different species can aid in diagnosing and treating various health issues related to the urinary and reproductive systems. For example, some veterinarians specialize in the care of birds and reptiles, where knowledge of the cloaca is essential for performing surgeries or managing diseases.In conclusion, the cloaca is a fascinating and complex structure that plays a vital role in the lives of many animals. Its multifunctionality highlights the incredible adaptations that organisms have developed over time to thrive in their environments. By studying the cloaca, we gain valuable insights into evolutionary biology, reproductive strategies, and even medical practices. As we continue to explore the intricacies of the natural world, the cloaca remains an important topic of research and discussion in both scientific and educational contexts.

术语cloaca指的是某些动物消化道末端的一个共同腔体，用于排泄和生殖产品的释放。这个解剖特征在爬行动物、鸟类、两栖动物和一些鱼类中尤为显著。cloaca作为一个多功能开口，在这些生物的生殖和排泄系统中发挥着至关重要的作用。理解cloaca的结构和功能可以为我们提供关于各种物种进化适应的见解。在许多脊椎动物中，cloaca作为废物、尿液和生殖细胞的单一排放点。例如，在鸟类中，cloaca不仅参与产卵，还负责粪便的排出。这种独特的适应性使鸟类能够节约水分，并保持轻量的身体结构，这对于飞行至关重要。将多个功能合并为一个开口的效率是一个显著的进化特征，在多个动物群体中都有观察到。此外，cloaca的存在还可以指示某些物种的进化谱系。例如，爬行动物和鸟类被认为是从具有此结构的共同祖先进化而来的。研究这些动物的cloaca可以帮助科学家理解从水生到陆生生活的过渡，因为它反映了生殖策略和对不同环境的适应方面的重大变化。除了生物学意义外，cloaca还具有文化意义。在某些社会中，具有cloaca的动物的生殖习性引发了好奇和迷恋。例如，青蛙和其他两栖动物的交配仪式通常涉及使用cloaca的过程，称为拥抱（amplexus），雄性抓住雌性以确保成功受精。这种行为突显了cloaca在生殖和物种生存中的重要性。此外，研究cloaca在医学和兽医学中也有实际应用。了解这一器官在不同物种中的功能可以帮助诊断和治疗与泌尿和生殖系统相关的各种健康问题。例如，一些兽医专门照顾鸟类和爬行动物，对cloaca的知识对于进行手术或管理疾病至关重要。总之，cloaca是一个迷人而复杂的结构，在许多动物的生活中发挥着重要作用。它的多功能性突显了生物在时间上发展出的惊人适应能力。通过研究cloaca，我们获得了对进化生物学、生殖策略甚至医学实践的宝贵见解。在我们继续探索自然世界的复杂性时，cloaca仍然是科学和教育领域重要的研究和讨论主题。