. L'anatomie de la grenouille. Les grenouilles -- Anatomie ; Amphibiens -- Anatomie. Le tube digestif. 291. Des fois isolées de la muqueuse de l'intestin grêle de Rana lemjioraria ; après Langer. Quarante fois grandeur nature. Vaisseaux sanguins, à rayures ombrées lacteals lacteals. ne sont pas simples mais dans la forme o£ un réseau grossier (Fig. 189), (Langer).] (7) [les nerfs de Fig.^ 190 p. (l'intestin grêle. 200) usu- al ly suivez les artères à l'enrobe, entre lesquels ils forment un plexus le plexus (Auerbach) ; à partir de ce de nombreux rameaux sont dégagés, qui coiirse seul ou en compagnie de navires pour les muqueuses

• Contributeur: Library Book Collection / Alamy Banque D'Images
• ID de l’image: RN79D2
• Taille du fichier: 7,2 MB (347,5 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 2041 x 1225 px | 34,6 x 20,7 cm | 13,6 x 8,2 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. THE ALIMENTARY TRACT. 291. Isolated fold of mucous membrane of small intestine of Rana lemjioraria ; after Langer. Forty times natural size. Blood-vesseLs striped, lacteals shaded. lacteals are not simple but in the form o£ a coarse network (Fig. 189), (Langer).] (7) [The nerves of tlie Fig. 190. small intestine (p. 200) usu- al ly follow the arteries to the muscular coats, between which they form a plexus (Auerbach's plexus) ; from this numerous twigs are given off, which coiirse alone or in company with vessels to the mucous coat, where a second plexus (Meissner^s plexus) is formed. Auerbach's plexiis, according to Klein, consists of bands of nervous fibrils in endothelial sheaths ; they branch and inosculate, and thus form a plexus. Where several such branches meet, a more or less complicated decus- sation of the bands of fibres takes place. Along these nervous bands are ganglion cells, either isolated or in groups. The cells are large, generally spherical, and contain a sharply outlined nucleus with a single or double nucleolus. The smaller cells generally appear to possess only one process, which can be traced from the protoplasm of the cell between the fibrils of the nerve-trunk. The larger cells are distinctly multipolar, their protoplasm being provided with a number of fine processes, or, as is oftener the case, with one large and several small processes. In many in- stances Klein was able to distinguish around the ganglion-cells a capsule of a spherical or ovoid shape. In these cases the body, as well as the processes of the ganglion-cell, were lying within the capsule. This system of ganglion- cells is in connection with the individual bimdles witliin the nerve-trunks. r 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work

Recherche dans la banque de photos par tags

• bookcentury1800
• bookdecade1880