| 词汇 | antrum |
| 释义 | antrum noun[ C ] anatomy specializeduk /ˈæn.trəm/ us /ˈæn.trəm/pluralantrauk /ˈæn.trə/ us /ˈæn.trə/antrums a hollow space, especially in a bone窦，房 Substances & structures in the body abductor accessorius ACL actin adductor funiculus fusiform glomerular glomerulus GnRH navicular neuroendocrine neurohormonal neurohormone nociceptive tendinous tendinum tendo tensor Th Examples of antrumantrum The cultured follicles developed an antrum, demonstrating that the follicles survived. Once the follicle has accumulated a few thousand granulosa cells, a fluid-filled cavity becomes apparent in the extracellular space; this is the antrum. Effects of varying gonadotrophin dose and timing on antrum formation and ovulation efficiency of mouse follicles in vitro. The oocyte is excentric and there is a dark area where the antrum could form. This resulted in a mean final diameter of 471 + 7 m with a high proportion (89%) of antrum formation and healthy appearing oocytes. Unexpected oocyte growth after follicular antrum formation in four marsupial species. The physical barrier properties of healthy growing follicles can be evaluated by measuring the penetration of plasma proteins in the antrum as a function of their concentration in blood. Reversal of anionisation, however, restores their capacity to freely enter the antrum once again. They found that the heparin-like compounds are synthesized mainly by the granulosa and theca cells and are released into the follicular antrum, suggesting a process of active secretion. Alternatively, antrum, rather than theca cells, may be important for oocyte survival and growth by maintaining the intrafollicular microenvironment and sustaining the integrity of the follicles. Growth of preantral follicle was assessed by diameter measurement and antrum formation rate and oocyte growth was assessed by diameter measurement and survival ratio. The cyst may invaginate the antrum, but there should be evidence of a cortical boundary between contents of cyst and internal structure of antrum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Specifically, it is an inflammation of the mucosal lining of the mastoid antrum and mastoid air cell system inside the mastoid process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The antrum is tubular and sclerotized, with the ductus seminalis attaching at its upperside base. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The portion between the sulcus intermedius and the duodenopyloric constriction is termed the pyloric antrum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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