| 释义 |
‖ foramen|fɒˈreɪmɪn|
Pl. foramina |fɒˈræmɪnə|.
[L. forāmen, f. forāre to bore.]
An opening or orifice, a hole or short passage, for the protrusion of an organ, or for the performance of organic functions. In various applications in Anat., Zool., etc. In Bot. esp. the foramen of an ovule (see quot. 1866). Also with defining name, as foramen of Magendie [described by François Magendie (1783–1855), French physiologist], the median aperture in the roof of the fourth ventricle of the brain; foramen of Monro [described by Alexander Monro (1733–1817), Scottish anatomist], a foramen in the brain connecting the third ventricle with each of the two lateral ventricles; the interventricular foramen; foramen of Winslow [described by Jakob Benignus Winslow (1669–1760), Danish anatomist], a narrow passage connecting the lesser sac and the greater sac of the peritoneal cavity of the abdomen; the epiploic foramen.
1671Grew Anat. Veg. (1672) i. 3 At the thicker end of the Bean, in the outer Coat, a very small Foramen presents itself. 1682T. Gibson Anat. (1697) 20 Above, where it adheres to the Midriff, it has three foramina or holes. 1819Rees Cycl., Foramen..a term applied to the apertures observable in some specimens of echini, distinct from the mouth and vent. 1826J. & C. Bell Anat. & Physiol. Human Body (ed. 6) III. 274 My reader must now find his way into the marsupium, or purse of the omentum, viz. the porta omenti, the celebrated foramen of Winslow. 1826Kirby & Sp. Entomol. (1828) III. xxx. 256 In many conical pupæ is the appearance of a vertical foramen. 1828Quain Elem. Anat. (1837) 150 Round the optic foramen. 1831R. Knox Cloquet's Anat. 185 The intervertebral foramina. 1837J. Quain Elem. Anat. (ed. 4) 901 (Index), Foramen of Monro. 1841–71T. R. Jones Anim. Kingd. (ed. 4) 210 Innumerable foramina..give passage to as many tubular feet or protrusible suckers. 1866Treas. Bot. s.v., The foramen of an ovule is an aperture through the integuments, allowing the passage of the pollen tubes to the nucleus. 1882Quain's Elem. Anat. (ed. 9) II. 290 The roof or posterior wall [of the fourth ventricle]..is not quite complete, for there is a hole in it termed the foramen of Majendie [sic]. 1907Practitioner Aug. 267 A hernia into the foramen of Winslow was discovered. 1910Ibid. July 50 The orifice in the ependyma roofing the fourth ventricle, which is called the foramen of Magendie. 1951J. T. & O. T. Lewis tr. Houssay's Human Physiol. xxv. 226/2 Obstruction of Monro's foramen provokes dilatation in the ventricle occluded. |
单词 tram-line 释义 tram-lineAlso tramline.[f. tram n.2 5 or 6 + line n.2: cf. railway lin......