. Les poissons de la Grande-Bretagne et d'Irlande. Poissons, poissons. Squelette. XV os coBcavo coiineoting est couvert par des ligaments, et rempli d'une substance gélatineuse, l'- vestiges du notocord : par conséquent, élastique boules de consistance semi-liquide existent entre chaque vertèbre, ce qui leur permet de se déplacer très librement l'une sur l'autre.- Le vertebreOj abdominale ou ceux qui appartiennent au tronc, ont deux ou supérieure, qui passent les processus dorsale vers le haut et fusionnent, formant une voûte, l'arc neural, qui contient la moelle épinière. Au sommet de cette arche- s'agit d'une élongation de l'apophyse, l'épine neurale.

• Contributeur: The Book Worm / Alamy Banque D'Images
• ID de l’image: RDR4XK
• Taille du fichier: 7,2 MB (423,4 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1806 x 1384 px | 30,6 x 23,4 cm | 12 x 9,2 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 fishes of Great Britain and Ireland. Fishes; Fishes. SKELETON. XV coBcavo bones is covered in by coiineoting ligaments, and filled with a gelatinous substance, the- remains of the notocord : consequently, elastic balls of semi-fluid consistence exist between each vertebra, enabling them to move very freely one upon another.- The abdominal vertebreOj or those belonging to the trunk, have two superior or dorsal processes, which pass upwards and coalesce, forming an arch, the neural arch, which contains the spinal cord. At the summit of- this arch is a spinous elongation, the neural spine. Two transverse processes generally pass outwards from the body of each vertebra, and to them ribs are commonly articulated. The caudal vertebras, or those of the tail, are furnished with neui-al arches, and spines as in the abdominal region, but well-developed transverse pro- cesses are deficient, while along the inferior surface, of the bodies of each vertebra is an arch, similar to the neural arch. on its upper edge, and this. Kg. 3. SjtuLL OF THE CoD, Godus morhua: s, o, Supra occipital; /, Frontal; n, nasal; p, s, Para sphenoid; p, m, pre-maxillary; m, max- illary; d, Dentary; I, pre-orbital; .g, Quadrate; h, m, Hyq-mandibular; j), o, Pre-opercle; o, Opercle; s, o, Sub-opercle; i, o, Inter-opercle; c, 7i, Cerato-tiyal; 6, Branchioategous rays. â " lower or hsemal.arch serves to convey blood-vessels, while from it, springs inferiorly a haemal spine. Between the neural spines and the hsemal spines certain dagger-shaped bones are inserted along the median' lines of the body, and which are externally for the purpose of attaching the bases of the dorsal and anal fins. The hindmost caudal vertebra, usually of small size, articulates posteriorly with a fan-shaped bone, the.hypural, which along with the last neural and hsemal processes support the caudal fin. Among the plagiostomes the. Please note that these images are extracted from scanned page images that may have been digitally e

Recherche dans la banque de photos par tags

• bookcentury1800
• bookdecade1880
• bookpublisher
• livres à poissons