premaxillae

简明释义

英[/priˈmæksɪli/]美[/priˈmæksɪli/]

n. 前上颌骨（premaxilla的复数）

英英释义

单词用法

同义词

反义词

例句

1.All we have is the tip of the upper jaws -bones called the premaxillae, and a broken tooth preserved in one socket, "said Dr Martill."

我们拥有的是上颌的尖端，这是一种叫做前颌骨的骨头；还有一个保藏在牙槽里的、破碎的牙齿。

2.All we have is the tip of the upper jaws -bones called the premaxillae, and a broken tooth preserved in one socket, "said Dr Martill."

我们拥有的是上颌的尖端，这是一种叫做前颌骨的骨头；还有一个保藏在牙槽里的、破碎的牙齿。

3.Researchers are studying the premaxillae 前上颌骨 in ancient marine reptiles to learn about their feeding habits.

研究人员正在研究古代海洋爬行动物的premaxillae 前上颌骨以了解它们的觅食习惯。

4.The anatomy of the premaxillae 前上颌骨 is crucial for understanding craniofacial development.

了解premaxillae 前上颌骨的解剖结构对于理解颅面发育至关重要。

5.In some species, the size of the premaxillae 前上颌骨 can affect feeding behavior.

在某些物种中，premaxillae 前上颌骨的大小会影响觅食行为。

6.The premaxillae 前上颌骨 play a significant role in the structural integrity of the upper jaw.

premaxillae 前上颌骨在上颌的结构完整性中起着重要作用。

7.The fossil showed distinct features of the premaxillae 前上颌骨, indicating a unique evolutionary trait.

化石显示出明显的premaxillae 前上颌骨特征，表明一种独特的进化特征。

作文

The study of vertebrate anatomy reveals a fascinating array of structures that contribute to the overall functionality and adaptability of different species. One such structure is the premaxillae, which are vital components in the skull of many vertebrates. The premaxillae (前上颌骨) are paired bones located at the front of the upper jaw, playing a crucial role in the formation of the mouth and the alignment of teeth. This anatomical feature is particularly prominent in mammals, where it supports the incisors and aids in feeding mechanisms. In evolutionary terms, the presence and configuration of the premaxillae can provide insights into the dietary habits and ecological niches of various species. For instance, carnivorous animals often exhibit elongated premaxillae that accommodate sharp, protruding teeth designed for grasping and tearing flesh. In contrast, herbivorous species may have flatter premaxillae that support broader, grinding teeth suitable for processing plant material. This variation highlights the adaptability of vertebrates to their environments and feeding strategies.Moreover, the premaxillae are not only significant in living organisms but also play a pivotal role in paleontology. Fossils with well-preserved premaxillae can help scientists reconstruct the physical characteristics and behaviors of extinct species. By analyzing the shape and size of these bones, researchers can infer information about the animal's diet, habitat, and even social behavior. For example, the discovery of a dinosaur with unique premaxillae shapes could indicate a specialized feeding technique or an adaptation to a specific ecological niche.In addition to their functional importance, the premaxillae also present an interesting case for developmental biology. During the embryonic development of vertebrates, the formation of the premaxillae is influenced by various genetic and environmental factors. Understanding how these bones develop can shed light on congenital anomalies and evolutionary changes in craniofacial morphology. This knowledge can be applied in clinical settings, particularly in orthodontics and maxillofacial surgery, where precise alignment of the premaxillae is essential for proper dental function and aesthetic outcomes.In conclusion, the premaxillae serve as more than just structural elements in the vertebrate skull; they are key indicators of evolutionary adaptation, dietary specialization, and developmental processes. Their study enriches our understanding of both current biodiversity and the historical tapestry of life on Earth. As research continues to uncover the complexities of vertebrate anatomy, the premaxillae will undoubtedly remain a focal point of interest for scientists across multiple disciplines, from paleontology to medicine. The intricate relationship between form and function exemplified by the premaxillae underscores the beauty of evolutionary design and the ongoing quest to comprehend the natural world.

脊椎动物解剖学的研究揭示了许多结构的迷人阵列，这些结构有助于不同物种的整体功能和适应性。其中一个结构是premaxillae（前上颌骨），它是许多脊椎动物头骨的重要组成部分。premaxillae位于上颌的前部，是成对的骨骼，在口腔的形成和牙齿的排列中发挥着至关重要的作用。这一解剖特征在哺乳动物中尤为明显，它支撑着门牙，并有助于进食机制。从进化的角度来看，premaxillae的存在和构造可以为各种物种的饮食习惯和生态位提供见解。例如，肉食动物通常表现出延长的premaxillae，以容纳锋利、突出的牙齿，旨在抓住和撕裂肉类。相反，草食性物种可能具有较平坦的premaxillae，支撑着更宽的、适合加工植物材料的磨牙。这种变异突显了脊椎动物对其环境和进食策略的适应性。此外，premaxillae不仅在生物体内具有重要功能，而且在古生物学中也发挥着关键作用。保存良好的premaxillae化石可以帮助科学家重建灭绝物种的物理特征和行为。通过分析这些骨骼的形状和大小，研究人员可以推断出动物的饮食、栖息地甚至社会行为的信息。例如，发现一种独特形状的恐龙premaxillae可能表明了一种特殊的进食技术或对特定生态位的适应。除了其功能重要性外，premaxillae还为发育生物学提供了一个有趣的案例。在脊椎动物的胚胎发育过程中，premaxillae的形成受到各种遗传和环境因素的影响。了解这些骨骼如何发育可以揭示先天异常和颅面形态的进化变化。这些知识可以应用于临床环境，特别是在正畸学和颌面外科中，premaxillae的精确排列对正确的牙齿功能和美观结果至关重要。总之，premaxillae不仅仅是脊椎动物头骨中的结构元素；它们是进化适应、饮食专业化和发育过程的重要指标。它们的研究丰富了我们对当前生物多样性和地球生命历史织锦的理解。随着研究继续揭示脊椎动物解剖学的复杂性，premaxillae无疑将继续成为多个学科科学家的关注焦点，从古生物学到医学。premaxillae所体现的形式与功能之间的复杂关系突显了进化设计的美丽，以及理解自然世界的持续追求。