. Bulletin of the scientific laboratories of Denison University. Art. II.] Herrick, Gustatory Paths in Fishes. 8 i The terminal arborizations of this tract in the inferior lobe of Ameiurus shown in Fig. 37 probably belong to the gustatory component. The tractiis lobo-bulbaris arises from the whole of the lateral lobule of the inferior lobe and its fibers mingle with those of the tertiary gustatory tract, the two tracts, however, being well separated where they leave the lobe (Fig. 20, 23). The trac- tus lobo-bulbaris is the main path for descending impulses from the inferior lobe (gustatory an
. Bulletin of the scientific laboratories of Denison University. Art. II.] Herrick, Gustatory Paths in Fishes. 8 i The terminal arborizations of this tract in the inferior lobe of Ameiurus shown in Fig. 37 probably belong to the gustatory component. The tractiis lobo-bulbaris arises from the whole of the lateral lobule of the inferior lobe and its fibers mingle with those of the tertiary gustatory tract, the two tracts, however, being well separated where they leave the lobe (Fig. 20, 23). The trac- tus lobo-bulbaris is the main path for descending impulses from the inferior lobe (gustatory and other reflexes) and was termed in Mayser's descriptions ('82, p. 319) ''Nervenfaserbahn .; sec (gustatory nuc. neur/ts. tertiary gustatory tr P^S- ^5- One of the chief tertiary neurones of the superior secondary gusta- tory nucleus of a young carp. GoLGl method. X 1S7. For the relations of this neurone to the surrounding structures, cf. Fig. 22, which is drawn from the section next caudad. The dendrites spread out in the mesial part of the secondary gustatory nucleus. The neurite at once enters the tertiary gustatory tract for the inferior lobe and either passes out of the plane of the section or becomes medullated and so fails to impregnate. The fact that it is larger (as mentioned by Mayser) in cyprin- oids and the peculiarities of its course in the oblongata make it probable that it is the chief motor return path for the higher gustatory reflexes. This of course is not its only function, for it clearly serves as the chief path for all descending impulses from the inferior lobe to the oblongata and cord, and therefore carries olfactory and other reflex impulses in addition to gusta- 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 Denison University; Denison Scientific Association. Granville
Size: 1340px × 1865px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookauthordenisonuniversity, bookcentury1900, bookdecade1900
