| 释义 |
rhexis|ˈrɛksɪs|
Also 5 rixis.
[mod.L., ad. Gr. ῥῆξις, f. ῥηγνύναι to break.]
†1. Med. Outpouring of blood through the ruptured wall of a blood vessel. Obs.
a1425Rixis [see secondary a. 2 a]. 1684tr. Blancard's Physical Dict., Rhexis, the same that [sic] Rhegma. 1881A. Flint Treat. Princ. & Practice Med. (ed. 5) i. i. 27 When the extravasation is through the ruptured wall of a vessel, it is called hemorrhage by rhexis. 1899Allbutt Syst. Med. VI. 244 It cannot be doubted that the red corpuscles escape by diapedesis not by rhexis. 1914T. W. Widdowson Notes on Dental Surg. & Path. iv. 53 In some acute inflammations the capillary walls may give way, resulting in an extravasation of blood (rhexis) into the surrounding tissue.
2. Biol. The fragmentation of a cell or cellular component.
1930Maximow & Bloom Text-bk. Histol. iii. 66 In the granular leukocytes the nucleus may undergo fragmentation into separate parts (rhexis) or shrinkage (pyknosis). 1965N. F. Rodman et al. in Sasahara & Stein Pulmonary Embolic Dis. 35 Platelet rhexis begins with disintegration of the central-most alpha granulomeres and is evidenced by an electron-lucent zone containing disintegrating alpha granulomeres. 1968J. A. Serra Mod. Genetics III. xx. 130 To be efficient the polyploidizing chemicals must not cause rhexis or fragmentation of the chromosomes. |