. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE CRANIAL OR ENCEPHALIC NERVES. The ramuscules sent by the sympathetic chain to the Gasserian ganglion, are perhaps not foreign to the part the lifth pair seems to play in the secretory acts— nutritive and vaso-motor. Jolyet has found in the superior maxillary nerve, vaso-dilator filaments for the mucous membrane of the nasal fossae, the skin on the wings of the nostrils and lips, and the mucous membrane of the latter and the gums. 6. Sixth Paie (Abducentes), oe External Oculo-motor Nerves (Fig. 450, 5). The external
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE CRANIAL OR ENCEPHALIC NERVES. The ramuscules sent by the sympathetic chain to the Gasserian ganglion, are perhaps not foreign to the part the lifth pair seems to play in the secretory acts— nutritive and vaso-motor. Jolyet has found in the superior maxillary nerve, vaso-dilator filaments for the mucous membrane of the nasal fossae, the skin on the wings of the nostrils and lips, and the mucous membrane of the latter and the gums. 6. Sixth Paie (Abducentes), oe External Oculo-motor Nerves (Fig. 450, 5). The external oculo-motor arises from the medulla oblongata, immediately behind the pons Varolii, by from five to eight converging roots, which appear to issue from between the inferior pyramid and the Fig- ^54. lateral fasciculus of the me- dulla oblongata (Fig. 424, 9). Its nucleus is confounded with the anterior or superior nu- cleus of the facial, which will be described presently (Fig. 454, ME). It is directed immediately forward, leaves the pons Varolii in lying close to the inner side of the superior maxillary nerve, and traverses the foramen lacerum orbitale —which already lodges the ophthalmic branch of the fifth pair and the common oculo-motor nerve—to pierce the bottom of the orbit. It is entirely expended in the external rectus (or abductor) muscle of the eye, after giving off a small ramuscule to the external portion of the re- tractor DIAGRAM OF A SECTION OF THE MEDULLA OBLONGATA AND PONS VAROLII OF MAN, AT THEIR JUNCTION. PP, Pyramids; Pr, Pr, transverse fibres of the pons Varolii (between the various layers of these fibres are irregular strata of masses of grey substance); ME, ME, roots of the external motores oculorum ; M, nucleus common to the external motores oculorum and facial nerve; FT, fasciculus teres (vertical portion of the genu facialis); Fi, inferior nucleus of the facial, in which arise the radicles that form the fasciculus teres; GP, gelatinous su
Size: 1887px × 1324px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorchauveauaauguste18271, bookcentury1800, bookdecade1890
