pons

(ponz) (L. for “bridge”’]._ 1. Any slip of ti ue connecting two parts of an organ. 2. Same as pons varolii. p. cerebel’li. Same as p. varolii. Ὦ. hep’at is, a projection, not always present, partially bridging the longitudinal fi ure of the liver. Ῥ. tar i’ni, the floor of the posterior perforated space. p. varo’lii, the organ which connects 6 cerebrum, cerebellum, and oblong at a. It is a broad, transverse band of white fibers arching acro the upper part of the medulla oblong at a, and on each side contracting to a cord, to enter the cerebellum as the crus cerebelli. A groove along its middle lodges the basilar artery. Resting against it, near its posterior border, is the sixth pair of nerves. The upper surface of the pons forms a part of the floor of the fourth weitricle. It is made up of longitudinal fibers from the internal capsule; of longitudinal fibers of the tegmentum; of ¢transverse fibers connecting the two cerebellar hemispheres, and ma es of gray matter, the pontine nuclei, including the nuclei of the facial, abducens, and trigeminal nerves and the superior olivary nucleus.