| 单词 |
sclerotome |
| 释义 |
sclerotome Anat.|ˈsklɪərəʊtəʊm|
Also sk-.
[f. Gr. σκληρό-ς hard + τοµή section, and -τόµος cutter: see -tome.]
1. A sclerous element intervening between successive myotomes.
1857Goodsir in Edinb. New Philos. Jrnl. V. 122 To a segment of the sclerome I apply the designation Sclerotome. 1872Humphry Myology 98 A piece of the lateral muscle with one of the myotomes dissected out to shew the sclerotome, or intermuscular septum.
2. A knife used in incising the sclerotic.
1885Lancet 11 July 56/1 The eyeball is then rotated..and a lance-pointed sclerotome passed through the sclerotic.
Hence scleroˈtomal, scleroˈtomic adjs., of or pertaining to a sclerotome.
1890Webster, Sclerotomic. 1894[see myotome 1]. 1925J. S. Kingsley Vertebrate Skeleton 21 There is one great difference between Elasmobranches and higher Vertebrates; in the former cells from the sclerotomic elements..break through the elastica externa.., invade the notochordal sheath, and may chondrify there. 1971A. J. Waterman Chordate Struct. & Function vi. 211 The sclerotomic cells form the perichordal tube. In addition, a mass of sclerotomic tissue migrates to the myoseptum to form the neural and haemal arch anlagen. Ibid. (caption) Precartilage stage; further compaction of sclerotomal tissue with establishment of basic vertebral shape... Sclerotome stage; sclerotomal cells migrate from somite and form sclerotome. 1974D. & M. Webster Compar. Vertebr. Morphol. v. 87 The posterior half of one sclerotomal segment and the anterior half of the segment just behind it join together, so that each presumptive vertebra forms on a level overlapping two somites. |
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