. On the anatomy of vertebrates [electronic resource] . Brain of a Hake (Merluccius) with the base upward, ecu. 200. Plaited optic nerve of a , optic nerve deprived of itssheath, exhibiting the plaiteddisposition; 6, sclerotic coatof the eye through which thenerve is passing; c, retina,in which the nerve termi-nates, ecu. are cranium, again separate, the one to supplythe rectus superior and rectus internus, theother the obliquus superior; the filaments supplying the other 1 The writer has seen both varieties in different individuals of Gadus morrhua. NERVES OF FISHES. 301 muscles of th
. On the anatomy of vertebrates [electronic resource] . Brain of a Hake (Merluccius) with the base upward, ecu. 200. Plaited optic nerve of a , optic nerve deprived of itssheath, exhibiting the plaiteddisposition; 6, sclerotic coatof the eye through which thenerve is passing; c, retina,in which the nerve termi-nates, ecu. are cranium, again separate, the one to supplythe rectus superior and rectus internus, theother the obliquus superior; the filaments supplying the other 1 The writer has seen both varieties in different individuals of Gadus morrhua. NERVES OF FISHES. 301 muscles of the eyeball cannot be separated from the fifth pair. Inall other fishes the sixth or abducent nerve, fig. 185, 6, has its properorigin, as well as the fourth and third. The third, or oculomo-torius, ib. 3, rises from the base of the mesencephalon, behind thehypoaria, ib. n, or from the commissura ansulata; it escapes throughthe orbito-sphenoid (Carp), or the unossified membrane beneath it(Cod, fig. 196, 3), and is distributed constantly to the recti superior,inferior, and internus, and to the obliquus inferior; i
Size: 1650px × 1514px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
