proventriculus

简明释义

英[ˌprəʊvenˈtrɪkjʊləs]美[ˌproʊvenˈtrɪkjələs]

n. 前胃（鸟，昆虫，蚯蚓等的）

复 数 p r o v e n t r i c u l i

英英释义

单词用法

同义词

反义词

例句

1.The crop, proventriculus and paunch of workers in T. ampliceps is evidently longer and wider than in O. formosanus (P<0.01).

扩头蔡白蚁工蚁的嗉囊、前胃和囊形胃的长度和宽度明显大于黑翅土白蚁（P<0.01）。

2.The epithelium thickness of proventriculus was the thickest in Mongolia sheep group, and the thinnest in Texel sheep group.

前胃胃壁上皮厚度表现为蒙古羊组最厚，其次为无角陶赛特组，最薄为德克赛尔组。

3.The proventriculus histological structure was mucosa, submucosa, muscularis and serosa, from the inside to the outside.

前胃组织学结构由内向外依次为黏膜层、黏膜下层、肌层和浆膜层。

4.The crop, proventriculus and paunch of workers in T. ampliceps is evidently longer and wider than in O. formosanus (P<0.01).

扩头蔡白蚁工蚁的嗉囊、前胃和囊形胃的长度和宽度明显大于黑翅土白蚁（P<0.01）。

5.The proventriculus plays a key role in the digestive process before food enters the gizzard.

前胃在食物进入砂囊之前，在消化过程中发挥着关键作用。

6.The proventriculus can be affected by diet, impacting the overall health of the bird.

前胃可能会受到饮食的影响，从而影响鸟类的整体健康。

7.The bird's digestive system includes a part called the proventriculus, which is responsible for secreting digestive enzymes.

鸟类的消化系统包括一个叫做前胃的部分，负责分泌消化酶。

8.In poultry science, the health of the proventriculus is crucial for efficient digestion.

在家禽科学中，前胃的健康对高效消化至关重要。

9.Veterinarians often examine the proventriculus during health check-ups to ensure there are no blockages.

兽医在健康检查时常常检查前胃以确保没有堵塞。

作文

The digestive system of birds is a fascinating subject, particularly due to the unique structures that aid in their digestion. One such structure is the proventriculus, which plays a crucial role in the avian digestive process. The proventriculus is often referred to as the glandular stomach and is located between the esophagus and the gizzard. Unlike mammals, birds do not have a single stomach; instead, they possess two specialized compartments that work together to break down food efficiently.The primary function of the proventriculus is to secrete digestive enzymes and acids that begin the breakdown of food before it reaches the gizzard. This is particularly important because birds often consume harder foods, such as seeds and insects, which require thorough digestion. The proventriculus produces gastric juices that contain pepsin and hydrochloric acid, both of which are essential for protein digestion. As food passes through this glandular stomach, it is mixed with these powerful digestive fluids, allowing for the initial stages of nutrient absorption to occur.Interestingly, the size and functionality of the proventriculus can vary significantly among different bird species, depending on their diet. For example, carnivorous birds, like eagles and hawks, typically have a larger proventriculus that is well-developed to handle the protein-rich diets they consume. In contrast, granivorous birds, such as finches, may have a smaller proventriculus since their diet is primarily composed of seeds that are easier to digest.The relationship between the proventriculus and the subsequent gizzard is also noteworthy. After food is processed in the proventriculus, it moves into the gizzard, where it is mechanically ground down by the muscular walls of this organ. Many birds ingest small stones or grit to aid in this grinding process, which further enhances digestion. This two-step process of enzymatic and mechanical digestion is highly efficient and allows birds to extract maximum nutrients from their food.Moreover, the proventriculus is not just important for digestion but also plays a role in regulating the overall health of birds. A well-functioning proventriculus ensures that birds can effectively break down their food, absorb necessary nutrients, and maintain their energy levels. Any issues with this glandular stomach can lead to digestive disorders, affecting a bird's health and ability to thrive in its environment.In conclusion, the proventriculus is an essential component of the avian digestive system. Its function in secreting digestive enzymes and acids sets the stage for effective digestion, allowing birds to process a wide variety of foods. Understanding the role of the proventriculus not only sheds light on avian biology but also highlights the incredible adaptations that birds have developed to survive in diverse habitats. By studying these unique anatomical features, we can gain deeper insights into the complex relationships between diet, anatomy, and health in the avian world. The proventriculus exemplifies nature's ingenuity in solving the challenges of digestion, making it a remarkable topic of study for both ornithologists and biology enthusiasts alike.

鸟类的消化系统是一个迷人的主题，尤其是由于其独特的结构有助于它们的消化。其中一个结构是前胃，它在鸟类的消化过程中发挥着至关重要的作用。前胃通常被称为腺胃，位于食道和砂囊之间。与哺乳动物不同，鸟类没有单一的胃；相反，它们拥有两个专门的腔体，这些腔体共同工作以有效地分解食物。前胃的主要功能是分泌消化酶和酸，在食物进入砂囊之前开始分解过程。这一点尤为重要，因为鸟类通常摄入较硬的食物，例如种子和昆虫，这些食物需要彻底消化。前胃产生的胃液中含有胃蛋白酶和盐酸，这两者对于蛋白质的消化至关重要。当食物通过这个腺胃时，它与这些强效的消化液混合，从而使营养素的初步吸收得以进行。有趣的是，前胃的大小和功能在不同鸟类物种之间可能会显著变化，这取决于它们的饮食。例如，肉食性鸟类，如老鹰和猎鹰，通常具有更大且发达的前胃，以处理它们所消费的富含蛋白质的饮食。相比之下，食谷鸟类，如雀类，可能具有较小的前胃，因为它们的饮食主要由更易消化的种子组成。前胃与随后砂囊之间的关系也值得注意。在食物在前胃中处理后，它会移动到砂囊，在那里通过该器官的肌肉壁进行机械磨碎。许多鸟类会吞食小石头或砂粒，以帮助这一磨碎过程，从而进一步增强消化。这种酶消化和机械消化的两步过程非常高效，使鸟类能够从食物中提取最大营养。此外，前胃不仅对消化重要，还在调节鸟类的整体健康方面发挥着作用。一个功能良好的前胃确保鸟类能够有效地分解食物、吸收必要的营养并维持其能量水平。任何与这个腺胃相关的问题都可能导致消化障碍，影响鸟类的健康和在环境中生存的能力。总之，前胃是鸟类消化系统的一个重要组成部分。它在分泌消化酶和酸方面的功能为有效消化奠定了基础，使鸟类能够处理各种食物。理解前胃的作用不仅揭示了鸟类生物学的奥秘，还突显了鸟类为了在不同栖息地生存而发展出的令人难以置信的适应性。通过研究这些独特的解剖特征，我们可以更深入地了解饮食、解剖学和鸟类世界健康之间复杂的关系。前胃体现了自然在解决消化挑战方面的独创性，使其成为鸟类学家和生物爱好者都值得研究的主题。