yolk sac
包裹着卵黄
常用释义
英式发音
美式发音
基本释义
- 卵黄囊：大多数脊椎动物中的一种膜囊，包裹着卵黄，通过卵黄柄与胚胎的肠腔相连，供应有血管，将营养卵黄产物输送到发育中的胚胎。
例句
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1·Extraembryonic mesoderm migrates through primitive streak to the presumptive yolk sac between days 6.5 and 7.0 of gestation.胚外中胚层在妊娠的第6.5至7.0天之间通过原始条带迁移到推测的卵黄囊。
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2·The yolk sac is shrinking.该卵黄囊缩小。
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3·Testicular yolk sac tumor.比较典型的卵黄囊瘤。
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4·The yolk sac is gradually vascularized.卵黄囊逐渐被血管化了。
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5·Yolk sac tumor rarely involves the pericardium.卵黄囊瘤很少涉及心包。
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6·Objective: To explore CT image of yolk sac tumor out of gonad.目的：探讨CT在性腺外卵黄囊瘤的临床应用价值。
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7·The yolk sac and yolk stalk on one of them were well preserved.观察了三例人胚外形，其中一例还有保存良好的卵黄囊和卵黄蒂。
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8·Purpose To study the clinicopathological features of yolk sac tumor (YST) of the heart.目的：探讨心脏卵黄囊瘤临床病理特征。
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9·The zebra pattern is fairly distinct and the yolk sac begins to flatten out as it is absorbed.斑马格局相当鲜明，并卵黄囊开始平平，因为它是吸收。
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10·The zebra pattern is fairly distinct, and the yolk sac begins to flatten out as it is absorbed.斑马格局相当鲜明，并卵黄囊开始平平，因为它是吸收。