. The anatomy of the human body. Human anatomy; Anatomy. THE FURROWS, LOBULES, ETC., OF THE CEREBELLUM. 717 Tlie lower surface of the cerebellum {figs. 275, 276) is received into the concavity ol the occipital fossae, to which it is exactly fitted: it is divided into tv?o rounded, lateral halves {h,fig. 275), the lobes of the cerebellum, by an antero-posterior fissure (a to n), the great median fissure of the cerebellum (vallecula, Haller). Th^ back part of the cerebellum is completely subdivided by this fissure (see fig. 282), which receives the falx cerebelli; in front, the fissure opens int
. The anatomy of the human body. Human anatomy; Anatomy. THE FURROWS, LOBULES, ETC., OF THE CEREBELLUM. 717 Tlie lower surface of the cerebellum {figs. 275, 276) is received into the concavity ol the occipital fossae, to which it is exactly fitted: it is divided into tv?o rounded, lateral halves {h,fig. 275), the lobes of the cerebellum, by an antero-posterior fissure (a to n), the great median fissure of the cerebellum (vallecula, Haller). Th^ back part of the cerebellum is completely subdivided by this fissure (see fig. 282), which receives the falx cerebelli; in front, the fissure opens into a wide furrow, into which the medulla oblongata is received (see fig. 276); in the middle of the fissure is a lozenge-shaped interval, at the bottom of which is seen the base of a pyramidal emi- nence {a h c, fig. 275), divided transversely Fig, 275. into rings like a silkworm, and named, ac- cordingly, by the older anatomists, the in- ferior vermiform process {vermis inferior, pyr- amid of Malacarne). This eminence is de- veloped into four prolongations or branch- es, arranged in the form of a cross; the posterior prolongation (c) is tapering, and occupies the back part of the great median fissure; the two lateral processes dip (on each side of b) into the adjacent portion of the fourth ventricle ; and the anterior {b) tapers from behind forward, and terminates in a mammillary enlargement (a), which is free, and projects into the fourth ventricle. It has been unnecessarily distinguished from the rest of the inferior vermiform process by Malacarne and Chaussier, under the name of the laminated tubercle of the fourth ventricle {tubercle lamineux du quatrieme ventricule).* The inferior vermiform process is merely the lower part of the median lobe of the cere- bellum, of which the superior vermis constitutes the upper part. The superior vermis is continuous, without any line of demarcation, with the two hemispheres of the cerebel- lum, so that the upper part of that organ appear
Size: 1977px × 1264px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
