| 单词 |
tunica |
| 释义 |
tunica1 Anat.|ˈtjuːnɪkə|
[L.: see tunic.]
= tunic 4 a in various mod.L. collocations, as tunica adventitia [see adventitious a.], an outer sheath, esp. of a blood-vessel; tunica albuginea [L. albūgin-is white spot], a white fibrous layer, esp. of the penis or testes; tunica vaginalis, a serous membrane covering much of the testis.
1698W. Cowper Anat. Humane Bodies sig. Aa, The tunica albuginea, or proper membrane of the testes. 1828J. Quain Elem. Anat. 530 The tunica vaginalis, or serous covering derived from the peritonæum. 1890Gray's Anat. (ed. 12) 48 The arteries are composed of three coats: internal or endothelial coat (tunica intima of Kölliker); middle muscular coat (tunica media); and external cellular coat (tunica adventitia). 1963Lancet 5 Jan. 19/2 The two layers of the tunica vaginalis, which normally invest the testis alone, extend upwards to cover the whole epididymis and the cord, sometimes as high as the inguinal canal. 1977Proc. R. Soc. Med. LXX. 645/1 They observed degenerative changes mainly in the progressive thickening of the tunica adventitia. 1980Gray's Anat. (ed. 36) 1152/1 The fibrous layer of the eyeball..consists of an opaque, posterior part, the tunica sclera, and a transparent, anterior part, the tunica cornea. |
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