| 释义 |
plexiform, a. Anat.|ˈplɛksɪfɔːm|
[mod. f. plex-us + -form. So F. plexiforme.]
Of the form of a plexus; forming a plexus or plexuses. plexiform layer [tr. F. couche plexiforme (externe, interne) (S. Ramón y Cajal 1893, in La Cellule IX. 132)], either of two layers of the retina separated by the inner nuclear layer, the outer one of which contains synapses between the rods and cones and the neurones of the nuclear layer, whilst the inner one contains synapses between these neurones and ganglion cells; = molecular layer (a) s.v. molecular a. 5.
1828Webster, Plexiform, in the form of network; complicated. Quincy. 1830R. Knox Cloquet's Anat. 463 Of these portions the outer and larger, which is plexiform, triangular and flattened, comes from the Gasserian ganglion. 1894Quain's Elem. Anat. (ed. 10) III. iii. 41 (heading) Inner molecular or inner plexiform layer, neurospongium. 1900Brit. Med. Jrnl. No. 2040. 248 Its papilla is covered with a plexiform mesh of dilated vessels. 1911Ophthalmoscope IX. 437 The external plexiform layer remains very narrow. 1959W. Andrew Textbk. Compar. Histol. xv. 604 The ten layers in order, from without in, i.e. toward the vitreous humor, are: (1) the pigmented epithelium, (2) the layer of rods and cones,..(5) the outer plexiform layer, (6) the inner nuclear layer, (7) the inner plexiform layer,..and (10) the inner limiting membrane. 1972Thorpe & Glickstein in tr. S. Ramón y Cajal's Structure of Retina p. viii, The dendritic trees of the ganglion cells spread at different levels within the inner plexiform layer and form associations with the processes of the amacrine and bipolar cell processes, thereby creating the distinct laminar appearance of this layer so clearly described by Cajal. |