I370 



A MANUAL OF ANATOMY 



The vallecula separates the two cerebellar hemispheres from each 

 other, and the inferior vennis is separated on either side from the 

 corresponding hemisphere by a furrow called the sulcus vallecula. 

 The under surfaces of the hemispheres are markedly convex, and 

 are received into the inferior occipital or cerebellar fossse of the 

 occipital bone. 



The inferior vermis is composed of four lobules, named, in order 

 from behind forwards, tuber valvulse, pyramid, uvula, and nodule. 



The tuber valvulge (tuber posticum) forms the posterior part of 

 the inferior vermis, and is composed of several laminre. On either 

 side it is prolonged into the corresponding hemisphere, and becomes 

 continuous with the postero-inferior lobule. It is the only part 

 of the inferior vermis which is prolonged into the cerebellar hemi- 

 spheres. 



Flocculus 



Biventral Lobule 



Lobulus Gracilis 



Great Horizontal 

 Fissure 

 Inferior Semilunar Lobule 



Amygdala (Tonsil) 



Fig. 574 — The Ckrebeixum (Inferior View). 



(The Inferior Semilunar Lobule and the Lobulus Gracilis constitute 

 the Postero-inferior Lobule). 



The pyramid is situated in front of the tuber valvulae. It 

 presents about four laminae, and is separated by deep sulci from 

 the tuber valvulae behind and the uvula in front, whilst on either 

 side it is separated from the cerebellar hemisphere by the sulcus 

 valleculae. Laterally it is connected with the biventral lobule of 

 the hemisphere by means of a faint ridge, but this lies low in the 

 sulcus valleculae as it crosses it. 



The uvula is situated in front of the pyramid, and between the 

 amygdalae or tonsils of the hemispheres. It is triangular, the 

 base being directed backwards, and it consists of several laminae. 

 It is separated on either side from the hemisphere by the sulcus 

 valleculae. I aterally its narrow part is connected with the 

 amygdala by a ridge of grey matter, but this lies low in the sulcus 



