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单词 anterior fontanelle
释义

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anterior fontanelle
b. Any of the membranous gaps between the bones of the skull in human infants and young children, which close by ossification in early childhood; esp. (more fully anterior fontanelle) the largest (and last to close) of these, located between the frontal and parietal bones. Also: a similar gap, sometimes persistent throughout life, in the skull of various other animals.In the human infant there are six fontanelles, the anterior and posterior fontanelles in the midline of the skull, and a mastoid and sphenoidal fontanelle on each side.
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the world > life > the body > structural parts > bone or bones > skull > parts of skull > [noun] > parietal bones > fontanelle
moulda1398
closure1569
fontanelle1598
1598 A. M. tr. J. Guillemeau Frenche Chirurg. ii. iv. f. 11/2 Nether may we trepane on the fontanelle [Fr. la fontenelle de la teste], or openinge of the heade in yonge Children.
1699 tr. de La Vauguion Compl. Body Chirurg. Operations 159 Aristotle thinks the Fontanel [Fr. fontenelle] Ossifies, about the time Children begin to speak.
1741 A. Monro Anat. Human Bones (ed. 3) 71 That Part of the parietal and frontal Bones, where the Fontanelle is in Children.
1752 W. Smellie Treat. Midwifery I. 292 No perceiveable pulsation at the Fontanelle.
1813 M. Baillie in New Eng. Jrnl. Med. & Surg. 2 92 (note) In two children, I opened the head at the anterior fontanel.
1873 St. G. Mivart Lessons Elem. Anat. iii. 127 The transitory fontanelle of man is permanent in some animals, as..certain Sharks.
1875 T. H. Huxley in Encycl. Brit. I. 755/1 A large space (fontanelle) covered in by membrane, which lies in the interorbital region [of the frog].
1949 H. Bailey Demonstr. Physical Signs Clin. Surg. (ed. 11) viii. 86 Delayed closure of the fontanelle is seen in several metabolic diseases, especially rickets, of which it is good confirmatory evidence.
2001 N. Jones Rough Guide Trav. Health ii. 195 Dehydrated children tend to be listless and quiet, with dry, sunken eyes and, in babies, a sagging, flaccid fontanelle, or ‘soft spot’.
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