| 释义 |
epimere, n.|ˈɛpɪmɪə(r)|
[In sense 1, a. G. Epimere (E. Haeckel 1866, in Allgemeine Anatomie der Organismen 316); in sense 2, directly f. epi- and -mere.]
1. Zool. = epimeron n., in various senses.
1882Syd. Soc. Lex. s.v., Epimere, name given by Häckel to the segments of the transverse axis, or the so-called homonymous parts, as, for example, to the several segments of the extremities in Vertebrata and Arthropoda, and to similar segments in plants, such as the segments of a segmented leaf. 1967Oceanogr. & Marine Biol. V. 373 Epimeres of the abdominal segments ending in a sharp point directed to the rear.
2. Embryol. In vertebrate embryos, that part of the mesoderm, lying adjacent to the notochord, which subsequently divides to form the dermatome, myotome, and sclerotome.
1890F. P. Foster Med. Dict. II. 1471/2 Epimere,..in embryology, the dorsal part of a metamere giving rise to a myotome. 1927W. Shumway Vertebr. Embryol. iii. 87 The epimere becomes divided by transverse constrictions into metameric blocks called somites, which give rise to muscles, vertebræ, and part of the dermis. 1950D. P. Quiring Funct. Anat. Vertebr. iv. 102 The sclerotome develops from the epimere along with the dermatome and myotome. 1974D. & M. Webster Compar. Vertebr. Morphol. ii. 39 The epimere lies dorsally, between surface ectoderm and nerve cord. |