Manuale di istologia umana . vous tronchi, sebbene non costantemente e mai così muchdeveloped. Nulla di certo è noto del i linfatici della cornea{vid. Inoltre, Arnold, Anat.- II, p. 988), anche se ho recentemente [Questa affermazione è direttamente opposto al sig. Bowmans osservazioni (op. c.,p. 22),?chi dice, che sembrerebbe da ciò che è stato detto in merito alla conversionof posteriore lamina elastica in corrispondenza del suo bordo in tessuto fibroso, che in parte passesthrough l'umore acquoso per l'iride, che questo epitelio deve cessare con lamina theelastic, poiché non vi è più alcuna stratum su whic

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Manual of human histology . vous trunks, although not constantly and never so muchdeveloped. Nothing certain is known of the lymphatics of the cornea{vid. also, Arnold, Anat.- II, p. 988), though I have recently [This statement is directly opposed to Mr. Bowmans observations (op. c., p. 22), ?who says, that it would appear from what has been said concerning the conversionof the posterior elastic lamina at its border into fibrous tissue, which in part passesthrough the aqueous humor to the iris, that this epithelium must cease with theelastic lamina, since there is no longer any stratum upon which it can rest. Hehas been unable to discover the smallest appearance of it upon the pillars of theiris, and conceives therefore that it is limited to the cornea. And according tothe same accurate observer, the front of the iris has no true epithelial investment.—Eds.] 358 SPECIAL HISTOLOGY. observed vessels in the cornea of a young Cat (fig. 297), whichI can scarcely regard as anything else than lymphatics. In Fig. 297.. this instance, at the margin of the cornea, together with thevery distinct capillary loops containing blood-corpuscles, therewere numerous wider vessels (of OOl—0 02, or even 003), which either extended singly into the cornea to the same dis-tance as the blood-vessels, and terminated in dilated clavateends, or in acuminate points, or two, three, or more together, formed simple loops, from which in like manner other csecalprocesses were given off. Notwithstanding their capacitythese vessels presented a delicate, structureless coat, with scat-tered, appressed nuclei, and contained a clear fluid, in whichfrequently a few, and occasionally even a good many clearspherical cells, exactly like lymph-corpuscles, were visible. IfI had found these vessels in other animals as well, I shouldat once have declared them to be the commencements of thelymphatics of the conjunctiva, but it appears to me, at present, more prudent to regard this explanation perhaps as probable, bu

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1850
• booksubjecthistolo
• bookyear1853