preoral

简明释义

英[priːˈɔːrəl]美[priˈɔrəl]

[昆] 口前的

英英释义

单词用法

同义词

反义词

例句

1.There are two circumoral ciliarvrows and a preoral ciliary row on the buccal region and a dorsal row of bristles.

其腹面口区具二环围口纤毛列及一口前纤毛列；背面具一列背刚毛；腹面纤毛列的数目可发生较大变动。

2.There are two circumoral ciliarvrows and a preoral ciliary row on the buccal region and a dorsal row of bristles.

其腹面口区具二环围口纤毛列及一口前纤毛列；背面具一列背刚毛；腹面纤毛列的数目可发生较大变动。

3.The study focused on the preoral 口前的 anatomy of various invertebrates.

该研究集中于各种无脊椎动物的口前的解剖结构。

4.The preoral 口前的 region can be sensitive to touch in some organisms.

在某些生物中，口前的区域可能对触摸敏感。

5.The preoral 口前的 cavity in some aquatic animals helps them filter food from water.

一些水生动物的口前的腔体帮助它们从水中过滤食物。

6.During embryonic development, the preoral 口前的 structure plays a crucial role in forming the mouth.

在胚胎发育过程中，口前的结构在形成嘴部方面起着关键作用。

7.In certain species of fish, the preoral 口前的 area is used for respiration.

在某些鱼类中，口前的区域用于呼吸。

作文

In the study of anatomy and biology, the term preoral refers to a region located in front of the mouth. This term is particularly significant when discussing the developmental stages of various organisms, especially in the context of embryology and evolutionary biology. Understanding the preoral area is crucial for comprehending how certain species have evolved their feeding mechanisms and digestive systems over time. For instance, in many aquatic animals, the preoral region plays a pivotal role in their feeding strategies, as it often contains sensory structures that help them locate food sources in their environment.The preoral cavity can be observed in various marine organisms, such as certain types of jellyfish and larval fish. In these species, the preoral area is equipped with specialized cells that are sensitive to chemical stimuli, allowing the organism to detect potential prey even before they reach the mouth. This adaptation is essential for survival in the competitive and often nutrient-scarce oceanic environment.Moreover, the concept of preoral regions is not limited to marine life; it also extends to terrestrial animals. For example, some insects exhibit a preoral structure that assists in the initial stages of digestion. These insects utilize their preoral appendages to manipulate food particles, breaking them down before ingestion. This process highlights the evolutionary significance of the preoral area in enhancing feeding efficiency across different species.In the field of paleontology, researchers often examine fossils to understand the evolutionary history of organisms. The presence of preoral features in ancient species can provide insights into how their descendants adapted to changing environments. By studying the morphology of these structures, scientists can infer the dietary habits and ecological niches occupied by extinct species. Such research underscores the importance of the preoral region in tracing the lineage and evolution of diverse life forms.Furthermore, the study of preoral anatomy has implications for medical science, particularly in understanding congenital anomalies related to the mouth and throat. Conditions affecting the preoral region can lead to significant challenges in feeding and nutrition for affected individuals. By investigating the developmental processes associated with the preoral area, healthcare professionals can develop better treatment strategies for patients with such conditions.In conclusion, the term preoral encompasses a vital aspect of biological study, influencing our understanding of feeding mechanisms, evolutionary adaptations, and medical implications. As we continue to explore the complexities of life forms, the significance of the preoral region will undoubtedly remain a focal point of inquiry, shedding light on the intricate relationships between structure and function in the natural world.

在解剖学和生物学的研究中，术语preoral指的是位于口腔前面的区域。这个术语在讨论各种生物的发育阶段时尤其重要，特别是在胚胎学和进化生物学的背景下。理解preoral区域对于理解某些物种如何随着时间的推移演变其进食机制和消化系统至关重要。例如，在许多水生动物中，preoral区域在其进食策略中发挥着关键作用，因为它通常包含帮助它们在环境中定位食物来源的感官结构。这种适应对在竞争激烈且营养稀缺的海洋环境中生存至关重要。在许多海洋生物中，例如某些类型的水母和幼鱼，可以观察到preoral腔。在这些物种中，preoral区域配备了对化学刺激敏感的特殊细胞，使生物能够在潜在猎物到达嘴之前探测到它们。这种适应性对于在竞争激烈且常常缺乏营养的海洋环境中生存是必不可少的。此外，preoral区域的概念并不限于海洋生物；它还扩展到陆生动物。例如，一些昆虫表现出一种preoral结构，有助于消化的初始阶段。这些昆虫利用它们的preoral附肢来操纵食物颗粒，在摄入之前将其分解。这一过程突显了preoral区域在提高不同物种的进食效率方面的进化重要性。在古生物学领域，研究人员经常检查化石以了解生物的进化历史。古代物种中preoral特征的存在可以为其后代如何适应变化的环境提供见解。通过研究这些结构的形态，科学家可以推断出灭绝物种的饮食习惯和生态位。这项研究强调了在追踪多样生命形式的谱系和进化过程中，preoral区域的重要性。此外，preoral解剖学的研究对医学科学有影响，特别是在理解与口腔和喉咙相关的先天性异常方面。影响preoral区域的情况可能导致受影响个体在进食和营养方面面临重大挑战。通过调查与preoral区域相关的发展过程，医疗专业人员可以为患有此类疾病的患者制定更好的治疗策略。总之，术语preoral涵盖了生物学研究的一个重要方面，影响我们对进食机制、进化适应和医学影响的理解。随着我们继续探索生命形式的复杂性，preoral区域的重要性无疑将继续成为研究的焦点，为揭示自然界中结构与功能之间的复杂关系提供启示。