The anatomy of the nervous system, from the standpoint of development and function . dulla, which has somewhat the shape of a trun-cated cone, is considerably larger than the cord, but decreases in size as it istraced backward toward their point of junction. In the mammal a conspicuoustransverse bundle of fibers, associated with the cerebellum, is found on theventral and lateral aspects of that part of the medulla which belongs to themetencephalon and is known as the pons. But in the fish it is customary to MM \l l R \l. TUBE AM) ITS DERTVATIVES 27 consider the medulla oblongata as extending f
The anatomy of the nervous system, from the standpoint of development and function . dulla, which has somewhat the shape of a trun-cated cone, is considerably larger than the cord, but decreases in size as it istraced backward toward their point of junction. In the mammal a conspicuoustransverse bundle of fibers, associated with the cerebellum, is found on theventral and lateral aspects of that part of the medulla which belongs to themetencephalon and is known as the pons. But in the fish it is customary to MM \l l R \l. TUBE AM) ITS DERTVATIVES 27 consider the medulla oblongata as extending from the spinal cord to the tnesencephalon. It forms the ventral and lateral walls of the fourth ventricle; andwhen the roof of this cavity has been removed these walls arc seen to surrounda long and rather broad depression the fossa rhomboidea or floor of the fourthventricle which tapers caudally like the point of a pen (Fig. 9). The cerebellum forms an elongated mass the rostral end of which overhangsthe optic lobes, while the caudal extremity projects over the medulla oblongata.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectnervoussystem, bookye
