bronchioles

简明释义

英[ˈbrɒŋkiəʊlz]美[ˈbrɑːŋkiˌoʊlz]

n. [解剖]细支气管；小支气管（bronchiole 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Anatomy. — An airspace is the gas-containing part of the lung, including the respiratory bronchioles but excluding purely conducting airways, such as terminal bronchioles.

是肺的含气部分，包括呼吸细支气管，但不包括单纯的传导性气道，如终末细支气管。

2.The muscularized arteries were observed at the level of both respiratory bronchioles and alveoli.

呼吸性细支气管水平及肺泡水平小动脉肌化。

3.The rale produced when air passes through mucus-clogged bronchioles.

空气经过粘液阻塞的细支气管时会发生水泡音。

4.Centrilobular emphysema occurs with loss of the respiratory bronchioles in the proximal portion of the acinus, with sparing of distal alveoli.

当腺泡近端的呼吸性细支气管扩张，而远端的肺泡扩张不明显，腺泡中央型肺气肿就会发生。

5.The lung is spongy and consists of bronchioles and respiratorybronchioles and pulmonary alveoli etc.

肺为海绵状，由细支气管、呼吸性细支气管和肺泡等构成。

6.Histologically, the tumor showed irregular growth pattern with interstitial fibrous proliferation and intra-tumoral residual air-containing Spaces in alveoli and bronchioles.

其病理基础为癌瘤外侵和间质纤维组织增生，肿瘤内残存正常肺组织和支气管。

7.Airway smooth muscle (ASM), existing in the trachea and in the bronchial tree up to the terminal bronchioles, serves as an important structural effector tissue to regulate bronchomotor tone.

呼吸道平滑肌可见于气管至末梢细支气管中，它被认为是调节支气管运动张力的重要组织。

8.In a healthy lung, the bronchioles (细支气管) are clear and unobstructed.

在健康的肺部中，细支气管（细支气管）是清晰且无阻碍的。

9.The air travels through the trachea and into the bronchi, eventually reaching the bronchioles (细支气管) where gas exchange begins.

空气通过气管进入支气管，最终到达细支气管（细支气管），在这里开始气体交换。

10.During an asthma attack, the bronchioles (细支气管) constrict, making it difficult to breathe.

在哮喘发作期间，细支气管（细支气管）收缩，导致呼吸困难。

11.Inflammation in the bronchioles (细支气管) can lead to chronic bronchitis.

细支气管（细支气管）的炎症可能导致慢性支气管炎。

12.Smoking can damage the bronchioles (细支气管) and impair lung function.

吸烟会损害细支气管（细支气管）并影响肺功能。

作文

The human respiratory system is a complex network of organs and structures that work together to facilitate breathing and oxygen exchange. One of the critical components of this system is the network of airways that leads to the lungs. Among these airways, the most significant are the bronchi and their smaller branches known as bronchioles (支气管小管). Understanding the structure and function of bronchioles is essential for comprehending how our bodies take in oxygen and expel carbon dioxide.The respiratory tract begins with the nasal cavity, where air is filtered and warmed before it travels down the trachea. The trachea bifurcates into two primary bronchi, each leading to one lung. These bronchi further divide into smaller bronchi, which eventually branch into even smaller passages called bronchioles (支气管小管). Bronchioles are less than 1 millimeter in diameter and do not contain cartilage, unlike their larger counterparts. Instead, they are composed of smooth muscle and elastic fibers, allowing them to constrict and dilate, regulating airflow to the alveoli, where gas exchange occurs.The primary function of bronchioles (支气管小管) is to conduct air to the alveoli, the tiny air sacs in the lungs where oxygen enters the bloodstream, and carbon dioxide is removed. As air passes through the bronchioles, it is further filtered and humidified. The lining of the bronchioles contains cilia and mucus-producing cells that trap dust, pathogens, and other particles, preventing them from reaching the delicate alveoli.In healthy individuals, bronchioles (支气管小管) can efficiently manage airflow and maintain optimal conditions for gas exchange. However, various factors can affect their function. Conditions such as asthma, chronic obstructive pulmonary disease (COPD), and bronchitis can lead to inflammation and narrowing of the bronchioles, making it difficult to breathe. In asthma, for instance, the muscles around the bronchioles tighten, and the lining becomes swollen, resulting in wheezing and shortness of breath.Furthermore, environmental factors such as pollution, smoke, and allergens can irritate the bronchioles (支气管小管), exacerbating respiratory conditions and leading to increased susceptibility to infections. Therefore, maintaining healthy bronchioles is crucial for overall respiratory health. This can be achieved through regular exercise, avoiding smoking, and minimizing exposure to pollutants.In conclusion, bronchioles (支气管小管) play a vital role in the respiratory system, facilitating the passage of air to the alveoli and ensuring effective gas exchange. Understanding their structure and function helps us appreciate the complexities of our respiratory system and the importance of maintaining lung health. As we continue to learn more about respiratory diseases and their impact on bronchioles, we can develop better treatments and preventive measures to improve the quality of life for those affected by respiratory conditions.

人类的呼吸系统是一个复杂的器官和结构网络，协同工作以促进呼吸和氧气交换。这个系统的关键组成部分之一是通往肺部的气道网络。在这些气道中，最重要的是支气管及其被称为支气管小管（bronchioles）的较小分支。理解支气管小管的结构和功能对于理解我们身体如何吸入氧气和排出二氧化碳至关重要。呼吸道始于鼻腔，在这里空气被过滤和加热，然后通过气管向下流动。气管分叉成两个主要支气管，每个支气管通向一侧肺。这些支气管进一步分枝成更小的支气管，最终分成更小的通道，称为支气管小管（bronchioles）。支气管小管直径不到1毫米，不像它们较大的对应物那样含有软骨。相反，它们由平滑肌和弹性纤维组成，使它们能够收缩和扩张，从而调节气流到达肺泡，在那里进行气体交换。支气管小管（bronchioles）的主要功能是将空气导向肺泡，这些微小的肺泡是氧气进入血液并二氧化碳被排出的地方。当空气通过支气管小管时，它会进一步被过滤和湿润。支气管小管的内衬含有纤毛和产生粘液的细胞，这些细胞捕捉灰尘、病原体和其他颗粒，防止它们到达脆弱的肺泡。在健康个体中，支气管小管（bronchioles）可以有效管理气流，并维持气体交换的最佳条件。然而，各种因素可能会影响它们的功能。哮喘、慢性阻塞性肺病（COPD）和支气管炎等疾病可能导致支气管小管的炎症和狭窄，使呼吸变得困难。例如，在哮喘中，围绕支气管小管的肌肉收紧，内衬肿胀，导致喘息和呼吸急促。此外，污染、烟雾和过敏原等环境因素可能刺激支气管小管（bronchioles），加重呼吸状况，并增加感染的易感性。因此，保持健康的支气管小管对整体呼吸健康至关重要。这可以通过定期锻炼、避免吸烟和减少接触污染物来实现。总之，支气管小管（bronchioles）在呼吸系统中发挥着至关重要的作用，促进空气通过肺泡并确保有效的气体交换。理解它们的结构和功能帮助我们欣赏呼吸系统的复杂性以及保持肺部健康的重要性。随着我们继续了解呼吸疾病及其对支气管小管的影响，我们可以开发更好的治疗和预防措施，以改善受呼吸疾病影响的人的生活质量。