cloacal

简明释义

英[/kloʊˈeɪ.kəl/]美[/kloʊˈeɪ.kəl/]

adj. 阴沟的；泄殖腔的；厕所的；下水道的

英英释义

单词用法

同义词

反义词

例句

1.Bursa is the unique structure of the birds, is located at the top of the post-cloacal, the wall is full of lymphoid tissue.

法氏囊是鸟类特有的结构，位于泄殖腔后上方，囊壁充满淋巴组织。

2.In fact, virus on feathers could escape detection by the current surveillance strategies which assay the virus secreted in the cloacal and tracheal samples only.

事实上，存在于羽毛上的病毒可以逃避现在监控策略的检测，这些方法只是是化验泄殖腔和呼吸道分泌的样品。

3.The parasympathetic postganglionic neurons were found in the pelvic nerve and cloacal ganglion.

副交感节后神经元位于盆神经和泄殖腔神经节内。

4.Modern ornithologists and herpetologists call this a "cloacal kiss."

当今的鸟类学家和爬行动物学家称之为“泄殖腔之吻”。

5.In fact, virus on feathers could escape detection by the current surveillance strategies which assay the virus secreted in the cloacal and tracheal samples only.

事实上，存在于羽毛上的病毒可以逃避现在监控策略的检测，这些方法只是是化验泄殖腔和呼吸道分泌的样品。

6.Many amphibians use their cloacal (泄殖腔) region for both excretion and reproduction.

许多两栖动物使用它们的cloacal (泄殖腔) 区域进行排泄和繁殖。

7.The study focused on the anatomy of the cloacal (泄殖腔) structure in reptiles.

这项研究集中于爬行动物的cloacal (泄殖腔) 结构的解剖学。

8.In some species, the cloacal (泄殖腔) opening can be used for mating rituals.

在某些物种中，cloacal (泄殖腔) 开口可用于交配仪式。

9.The bird's reproductive system is connected to its digestive tract via the cloacal (泄殖腔) opening.

鸟类的生殖系统通过其消化道与cloacal (泄殖腔) 开口相连。

10.The cloacal (泄殖腔) vent is crucial for the elimination of waste in birds.

对于鸟类来说，cloacal (泄殖腔) 通风口对废物的排除至关重要。

作文

The term cloacal refers to the cloaca, which is a common cavity at the end of the digestive tract for the release of both excretory and reproductive products in certain animals. This anatomical feature is primarily found in birds, reptiles, amphibians, and some fish. Understanding the significance of the cloacal system can provide insights into the evolutionary adaptations of these species. In many vertebrates, the digestive, urinary, and reproductive systems are separate, allowing for more specialized functions. However, in animals with a cloacal structure, these systems converge into a single opening. This unique arrangement serves several purposes. Firstly, it allows for the efficient use of body space, as having a single outlet reduces the complexity of the organism's anatomy. Secondly, it facilitates the expulsion of waste and reproductive materials in a synchronized manner, which can be advantageous during mating seasons when the energy required for reproduction is high.For example, in birds, the cloacal vent plays a crucial role during the breeding season. Male birds often engage in a behavior known as 'cloacal kissing,' where they press their cloacal openings together to transfer sperm to the female. This method of reproduction is not only efficient but also minimizes the risk of injury that might occur with more direct mating strategies found in other species. Moreover, the cloacal system is also indicative of the evolutionary history of these animals. The presence of a cloacal structure suggests a closer evolutionary relationship among birds, reptiles, and amphibians. This connection highlights the shared ancestry and evolutionary pressures that have shaped the development of these groups. In contrast, mammals have evolved separate openings for their digestive and reproductive systems, which may reflect different evolutionary pressures and ecological niches. The separation allows for more complex behaviors related to reproduction and waste management, showcasing the diversity of life forms on our planet. Understanding the cloacal anatomy can also aid in conservation efforts. For instance, many amphibians are experiencing population declines due to habitat loss and climate change. By studying their reproductive strategies, including those involving the cloacal structure, scientists can devise better conservation strategies that take into account the specific needs of these animals. In conclusion, the cloacal system is a fascinating aspect of animal anatomy that reflects both evolutionary history and functional adaptation. It serves as a reminder of the diversity of life and the various strategies that organisms have developed to survive and thrive in their environments. As we continue to study these unique structures, we gain a deeper appreciation for the complexity of life on Earth. Understanding the cloacal anatomy not only enriches our knowledge of biology but also emphasizes the importance of preserving the ecosystems that support these remarkable creatures.

术语cloacal指的是泄殖腔，这是某些动物消化道末端的一个共同腔体，用于排放排泄和生殖产品。这个解剖特征主要存在于鸟类、爬行动物、两栖动物和一些鱼类中。理解cloacal系统的重要性可以为我们提供对这些物种进化适应的深刻见解。在许多脊椎动物中，消化、尿液和生殖系统是分开的，允许更专业的功能。然而，在具有cloacal结构的动物中，这些系统汇聚到一个开口中。这种独特的安排服务于几个目的。首先，它允许有效利用身体空间，因为只有一个出口减少了生物体解剖的复杂性。其次，它促进废物和生殖材料的同步排出，这在交配季节能量需求高时可能是有利的。例如，在鸟类中，cloacal孔在繁殖季节扮演着关键角色。雄性鸟类通常会进行一种称为‘泄殖腔接吻’的行为，他们将自己的cloacal开口紧贴在一起，以将精子转移给雌性。这种繁殖方法不仅高效，而且最小化了与其他物种中更直接的交配策略相关的伤害风险。此外，cloacal系统也表明了这些动物的进化历史。cloacal结构的存在暗示了鸟类、爬行动物和两栖动物之间更紧密的进化关系。这种联系突显了共同祖先和塑造这些群体发展的进化压力。相比之下，哺乳动物已经发展出消化和生殖系统的分开开口，这可能反映了不同的进化压力和生态位的差异。分离允许与繁殖和废物管理相关的更复杂的行为，展示了我们星球上生命形式的多样性。了解cloacal解剖学也可以帮助保护工作。例如，许多两栖动物由于栖息地丧失和气候变化而面临种群下降。通过研究它们的繁殖策略，包括涉及cloacal结构的策略，科学家可以制定更好的保护策略，以满足这些动物的具体需求。总之，cloacal系统是动物解剖学中一个引人入胜的方面，反映了进化历史和功能适应。它提醒我们生命的多样性以及生物体为在环境中生存和繁衍而发展出的各种策略。随着我们继续研究这些独特的结构，我们对地球上生命的复杂性有了更深刻的理解。了解cloacal解剖学不仅丰富了我们的生物学知识，还强调了保护支持这些非凡生物的生态系统的重要性。