| 释义 |
‖ valvula Anat.|ˈvælvjʊlə|
Pl. valvulæ.
[med. or mod.L., dim. of valva valve n. Cf. L. valvolæ pod of legumes.]
1. A valve or valvule.
Usually with Latin qualifying term, as valvula coli, valvulæ conniventes.
1615H. Crooke Body of Man (1631) 853 Some men had rather call them [sc. valves in the veins of the joints] Ostiolæ than Valuulæ. 1653More Antid. Ath. ii. xii. §6 You may add to these the notable contrivance of the Heart, its two Ventricles and its many Valvulae. 1832[see valve n.1 4 b]. 1859Todd's Cycl. Anat. V. 346/2 Opposite the attached border of the valvula, this layer is somewhat thick.
2. Ent. An elongated blade-like process attached to the coxa on the eighth or ninth abdominal segments of some insects and forming part of the ovipositor; = valve n.1 3 a.
1917,1935[see valvifer]. 1964R. M. & J. W. Fox Introd. Compar. Entomol. iii. 106 The ovipositor is present in its fully developed form, with three pairs of valvulae, in Phasmida, Grylloblatodea, Dictyoptera, Odonata and Corrodentia. 1978H. V. Daly et al. Introd. Insect Biol. & Diversity ii. 36/2 Eggs issue from the genital opening.., pass down a channel formed by the valvulae, and are deposited in the ovipositional medium. |