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单词 myocoel
释义

myocoeln.

Brit. /ˈmʌɪə(ʊ)siːl/, U.S. /ˈmaɪoʊˌsil/
Forms: 1800s– myocoel, 1900s– myocele, 1900s– myocoele.
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: myo- comb. form, -coele comb. form.
Etymology: < myo- comb. form + -coele comb. form, after German Myocöl (B. Hatschek 1888, in Anatomischer Anzeiger 15 Aug. 662). Compare myocoelomic adj.The form myocele is probably by confusion with -cele comb. form.
Embryology and Zoology.
In vertebrate embryos: a cavity in the centre of an early myotome. Also: a compartment of the coelom associated with each myotome in adult amphioxus ( Branchiostoma) and other cephalochordates.
ΚΠ
1889 Q. Jrnl. Microsc. Sci. 29 393 The fin-rays, the cavities of which are part of the myocœl.
1892 Amer. Naturalist 26 266 The myotomes (protovertebræ) have at first a cavity, myocœl, which is subsequently filled by an ingrowth of the inner wall.
1924 Philos. Trans. (Royal Soc.) B. 212 276 In Reptilia the existence of three pairs of pre-otic somites, each of which gives rise to a cavity, presumably a myocoele, is generally accepted.
1975 B. I. Balinsky Introd. Embryol. (ed. 4) xiii. 375 The flattening of the somite is accompanied by a change in the shape of its central cavity (the myocoele).
1983 Exper. Cell Biol. 51 228 Somite structures often built up of cells separated by large spaces and joined around a large myocele.
1995 C. Nielsen Animal Evol. liii. 426 Cephalochordates... The coelomic compartments lateral to the longitudinal muscles are called myocoels.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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