. Human physiology (Volume 1) . Terminating anteriorly in a scalloped border. of Sommering. 3. Zonula ciliaris. 4. Crys-talline lens. — (WilsonJ ORGAN OF VISION. 183. Partof the retina of a Frog seen fromthe outer surface. Magnified 300 times.— (Treviranus.) selves out, and inosculate with eachother by an interchange of fibrils, so asto form a net-like plexus. From thisplexus, the fibres of which lie in theplane of the surface of the vitreous hu-mour, a very large number of fibrilsarises in a direction perpendicular to thesurface, so as to be all directed towardsthe centre
. Human physiology (Volume 1) . Terminating anteriorly in a scalloped border. of Sommering. 3. Zonula ciliaris. 4. Crys-talline lens. — (WilsonJ ORGAN OF VISION. 183. Partof the retina of a Frog seen fromthe outer surface. Magnified 300 times.— (Treviranus.) selves out, and inosculate with eachother by an interchange of fibrils, so asto form a net-like plexus. From thisplexus, the fibres of which lie in theplane of the surface of the vitreous hu-mour, a very large number of fibrilsarises in a direction perpendicular to thesurface, so as to be all directed towardsthe centre of the eye. These passthrough a delicate layer of cellular tis-sue, containing a minute plexus ofbloodvessels, and from this every fibrilreceives a sheath, which envelopes itsextremity, and thus forms a minutepapilla. The surface of the retina, incontact with the vitreous humour, iswholly composed of these papillae, which are closely set togetherand which Dr. Carpentera thinks there can be little doubt are identical with the globules of the retina of diameter of these globules in man, accord- Fig. 32. ing to Weber, is from the ^W^ to ^^th °f aninch. About a sixth of
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectphysiology, bookyear1
