PONS

(Lat.), n. f. Po2nz(pons). Gen., pont'is. A bridge or bridge-like structure; especially, the p. Varolii. [a. 18.] P. hepatis. Syn.: isthmus hepatis. A part of the liver which sometimes extends from the quadrate to the left lobe, cro ing the umbilical fi ure.- [C.] P. Sylvii. Of the older anatomists, the corpora quadrigemina. [I, 3(K).] P. Tarini. Fr., pant de Tarin. A lamina of gray matter at the bottom of the posterior perforated space at the base of the brain, between the corpora albicantia. It forms a portion of the floor of the third ventricle. [I. 15 (K).] P. testihtis et iiatibus ornatus. See CORPORA quadrigrmina. P. Varolli. Fr., pont de Varole. Ger., Varoliusbriicke, Gehirnknoten. That division of the encephalon which connects the medulla oblong at a and the crura cerebri. It consists partly of longitudinal fibres continued above into the pes and tegmentum of the crura, partly of transverse fibres connecting the two cerebellar O, no; O, not; O3, whole; Tli, thin; Tli*, the; U, like oo in 331 [s. 311]