alimentary canal

简明释义

消化道

英英释义

例句

1.The food travels through the alimentary canal 消化道 from the mouth to the stomach.

食物从嘴巴通过alimentary canal 消化道 到达胃部。

2.The alimentary canal 消化道 is responsible for breaking down food and absorbing nutrients.

alimentary canal 消化道 负责分解食物并吸收营养。

3.Doctors often study the alimentary canal 消化道 to diagnose digestive disorders.

医生通常研究alimentary canal 消化道 来诊断消化系统疾病。

4.An obstruction in the alimentary canal 消化道 can lead to serious health issues.

在alimentary canal 消化道 中的阻塞可能导致严重的健康问题。

5.In biology class, we learned about the different parts of the alimentary canal 消化道.

在生物课上，我们学习了alimentary canal 消化道 的不同部分。

作文

The human body is an intricate system that is designed to sustain life through various biological processes. One of the most essential components of this system is the alimentary canal, which is responsible for the digestion and absorption of food. The alimentary canal (消化道) is a continuous tube that extends from the mouth to the anus, consisting of several organs that work together to break down food into nutrients that the body can use.The journey of food begins in the mouth, where it is mechanically broken down by the teeth and mixed with saliva. This initial stage of digestion is crucial as it prepares the food for further breakdown in the stomach. Once swallowed, the food travels down the esophagus, a muscular tube that connects the mouth to the stomach. The process of peristalsis, which involves rhythmic contractions of the muscles, helps move the food along the alimentary canal (消化道).Upon reaching the stomach, the food encounters gastric juices that contain hydrochloric acid and digestive enzymes. These substances play a vital role in breaking down proteins and killing harmful bacteria that may have been ingested. The stomach acts as a temporary storage facility, allowing the food to be mixed and processed before it moves on to the small intestine.The small intestine is where the majority of nutrient absorption occurs. It is divided into three parts: the duodenum, jejunum, and ileum. In the duodenum, bile from the liver and pancreatic juices are introduced, aiding in the emulsification of fats and further digestion of carbohydrates and proteins. The walls of the small intestine are lined with tiny finger-like projections called villi, which increase the surface area for absorption. Nutrients are absorbed through these villi into the bloodstream, where they are transported to various cells throughout the body.After the small intestine, any remaining waste products enter the large intestine, or colon. Here, water and electrolytes are reabsorbed, and the remaining material is compacted into feces. The large intestine also plays a role in housing beneficial bacteria that aid in the fermentation of undigested materials. Finally, the waste is expelled from the body through the anus, completing the journey through the alimentary canal (消化道).Understanding the structure and function of the alimentary canal is essential for recognizing how our bodies process food and maintain health. Disorders affecting any part of this canal can lead to significant health issues, such as malnutrition, gastrointestinal diseases, and infections. Therefore, maintaining a healthy diet and lifestyle is crucial for the proper functioning of the alimentary canal (消化道) and overall well-being.In conclusion, the alimentary canal (消化道) is a vital part of the human body that allows us to extract nutrients from the food we consume. By understanding its components and processes, we can appreciate the complexity of our digestive system and the importance of taking care of it. Regular check-ups and being mindful of our dietary choices can help ensure that our alimentary canal remains healthy and functional for years to come.

人类身体是一个复杂的系统，旨在通过各种生物过程维持生命。这个系统中最重要的组成部分之一是消化道，它负责食物的消化和吸收。消化道是一个从口腔延伸到肛门的连续管道，由多个器官组成，这些器官协同工作，将食物分解为身体可以利用的营养物质。食物的旅程始于口腔，在那里，它被牙齿机械性地破碎，并与唾液混合。这一初步的消化阶段至关重要，因为它为食物在胃中的进一步分解做好准备。一旦吞下，食物便通过食道，这是一条连接口腔和胃的肌肉管道。蠕动的过程，即肌肉的节律性收缩，有助于将食物沿着消化道移动。到达胃后，食物会遇到含有盐酸和消化酶的胃液。这些物质在分解蛋白质和杀死可能被摄入的有害细菌方面发挥着重要作用。胃充当一个临时储存设施，使食物能够混合和处理，然后再进入小肠。小肠是大多数营养吸收发生的地方。它分为三部分：十二指肠、空肠和回肠。在十二指肠中，来自肝脏的胆汁和胰腺液被引入，帮助乳化脂肪并进一步消化碳水化合物和蛋白质。小肠的内壁上有微小的指状突起，称为绒毛，增加了吸收的表面积。营养物质通过这些绒毛被吸收到血液中，运输到身体各个细胞。在小肠之后，任何剩余的废物进入大肠或结肠。在这里，水和电解质被重新吸收，剩余的物质被压缩成粪便。大肠还在容纳有益细菌方面发挥作用，这些细菌有助于未消化材料的发酵。最后，废物通过肛门排出体外，完成了在消化道中的旅程。理解消化道的结构和功能对于认识我们身体如何处理食物和维持健康至关重要。影响这一管道任何部分的障碍都可能导致严重的健康问题，如营养不良、胃肠疾病和感染。因此，保持健康的饮食和生活方式对于消化道的正常运作和整体健康至关重要。总之，消化道是人体的重要组成部分，使我们能够从所消费的食物中提取营养。通过理解其组成部分和过程，我们可以欣赏消化系统的复杂性以及照顾它的重要性。定期检查和关注我们的饮食选择可以帮助确保我们的消化道在未来几年内保持健康和功能正常。