| 释义 |
‖ decidua|dɪˈsɪdjuːə|
[mod. or med.L. for membrāna dēcidua deciduous membrane: see deciduous.]
1. Phys. A name given by Dr. W. Hunter to the membrane formed, in the impregnated uterus of certain orders of Mammalia, by alteration of the upper layer of its lining mucous membrane; it forms the external envelope of the ovum, and is cast off at parturition (whence the name).
1785Anat. Dialogues (ed. 2) 356 There is the false or spongy chorion, which Dr. [W.] Hunter has found to consist of two distinct layers; that which lines the uterus he styles membrana caduca or decidua, because it is cast off after delivery... The decidua and decidua reflexa, differ in appearance from the true chorion. 1794J. Hunter Wks. 1837 IV. 57 The enlargement of the uterus, the newly formed vascular membrane, or decidua, lining the cavity..sufficiently prove conception to have taken place. 1841E. Rigby Syst. Midwifery i. iii. 27 To Dr. W. Hunter are we indebted for the first correct description of the decidua.
attrib.1875tr. Ziemssen's Cycl. Med. X. 335 The so called decidua cells.
2. Path. The lining membrane of the unimpregnated uterus discharged in some cases of dysmenorrhæa.
1864F. Churchill Dis. Women ii. iv. (ed. 5) 211 Ovarian congestion, calling forth a sympathetic growth of the uterine glands, forming a false decidua. 1869New Syd. Soc. Biennial Retrospect 378 The idea that it is a simple menstrual decidua. |