| 词汇 | alveolus |
| 释义 | alveolus noun[ C ] anatomy specializeduk /ˌæl.viˈəʊ.ləs/ us /ælˈviː.ə.ləs/pluralalveoliuk /ˌæl.viˈəʊ.laɪ/ us /ælˈviː.ə.laɪ/ one of the many very small air bags in the lungs, with thin walls that allow oxygen to enter the blood肺泡（肺中的细小气囊，细胞壁薄，有助于氧气进入血液） Substances & structures in the body abductor accessorius ACL actin adductor fundus funiculus fusiform glomerular glomerulus myosin navicular neuroendocrine neurohormonal neurohormone tendinis tendinous tendinum tendo tensor The carbon dioxide, on the other hand, being in excess in the blood, diffuses toward the air in the alveoli. The epithelial cells are not arranged on any definite plan, but are closely packed in irregularly shaped alveoli. The small pits are alveoli, and the vessels in their walls are chiefly capillaries. Their exchanges must in all cases take place through the capillary walls and the layer of cells lining the alveoli. Trace the blood from the right ventricle to the alveoli and back again to the left auricle. Examples of alveolusalveolus Structures resembling bronchioles and distended alveoli are present between cysts, no cartilage present in the walls. It is supposed that schistosomula escape from pulmonary capillaries into alveoli and migrate through pulmonary tissues to the pleural cavity. We found only a trace of surfactant in the lumen of alveoli. The alveoli are smaller than those of the parasphenoid. There are relatively normal alveoli between the cysts. The protuberances therefore represent the inflated margins of the alveoli dentalis. On general microscopic examination, the peripheral airways and the alveoli appeared normal in all cases. The evidence of coloring is most intense on the palate and internal surface of the alveolus, but it also often occurs on the external alveolus. Almost 200 alveoli are present beneath the anterior half of the orbit. In these ctenochasmatid genera, the crest is low and only weakly grooved, and in addition, none of these genera has dentaries bearing expanded alveoli. Furthermore, failure to remove unnecessary lactational alveoli during weaning could result in inflammation and tissue damage. There is some evidence for small interdental plates dividing adjacent alveoli medially, but these are poorly preserved. However, surgery to close the alveolus and palate has been linked with poor facial growth. Interestingly, while some alveoli contain five to ten shed cells, others have none. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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