| 词汇 | lunula |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | lunula noun[ C ] anatomy specializeduk /ˈluːn.jə.lə/ us /ˈluːn.jə.lə/plurallunulaeuk /ˈluːn.jə.liː/ us /ˈluːn.jə.liː/ the curved white area at the bottom of your fingernail: This portion of the nail is of a whiter colour and is called the lunula. Large lunulae, constituting more than 25% of the thumbnail, are associated with high blood pressure. Regular buffing can promote healthy growth by stimulating blood circulation in the lunula. A fibrillar arrangement of the keratin has been thought to account for the whiteness and opacity of the lunula. The nail plate's free edge contour follows the shape of the nail's lunula. The hand ambidextrous carpal carpometacarpal carpus dexterity dexterous finger fingermark fingernail fingertip forefinger heel left-handed metacarpal metacarpophalangeal metacarpus minimus mitt nail nail bed |
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