FISTULA

the posterior part of the occipital lobe. pre central f., a fi ure parallel to the fi ure of Rolando and anterior to it. preclival f., one of the fi ures of the cerebellum. pre gracile f., the sulcus praegracilis; a fi ure of the cerebellum: it lodges the middle cerebral artery. pre limbic f., the anterior part of the callosomarginal fi ure. pre pyramidal f., a fi ure in front of the pyramid, tween the tonsil and the cuneate lobule. pterygotympanic f. Same as glaserian f. f. of lan do, the fi ure between the parietal and frontal lobes. Sant or in i’s f., a cleft in the fibrocartilage of the pinna of theear. Schwalbe's f’s, the super central and anterior occipital fi ures. sphenoid f., a cleft in the wings and body of the sphenoid and orbital plate of the frontal bone for various nerves and_ ve els. sphenomazxillary f., a fi ure between the great wing of the sphenoid and the orbital plate of the maxilla. It transmits the superior maxillary and orbital branches of the fifth nerve. sub frontal f. Same as inferofrontal f. subsylvian f. 1 An occasional fi ure on the ventral surface of the frontal lobe of the brain. 2. The horizontal limb of the fi ure of Sylvius. sub temporal f., an occasional fi ure in the inferior and middle temporal convolutions. super cal los alf. 1 The central part of the callosomarginal fi ure. 2. The callosomarginal fi ure. super central f., a cleft of the cerebrum situated above and parallel to the dorsal part of the central fi ure. superfrontal f., a fi ure on the lateral aspect of the frontal lobe, demarcating the second frontal convolution. super occipital f., a fi ure in the upper part of the occipital portion of the posterior lobe of the cerebrum. super septal f., a fi ure in the cuneus nearly parallel with the occipital fi ure. super temporal f., a fi ure in front of and parallel to the sylvian fi ure. Called also parallel f. f£. of Sylvius, a fi ure that separates the anterior and middle lobes of the cerebrum. tentorial f., the collateral fi ure. trans temporal f., an occasional short fi ure on the lateral surface of the temporal lobe. transverse f. 1. A fi ure cro ing the under surface of the right lobe of the liver. 2. A horseshoe shaped fi ure extending from the descending cornu of the cerebrum on one side to that on the other. tym omastoid f. Same as auricular f. umbilical f., the anterior part of the lonitudinal fi ure of the liver. ἔ. of the vestiule, the crack by which the fenestra rotunda opens into the vestibule. Wernicke’s f., a fi ure that sometimes demarcates the parietal and temporal lobes from the occipital lobe. szygal f., a fi ure that consists of two portions united by a third portion. sygomaticosphenoid f., a fi ure between the orbital surface of the great wing of the sphenoid bone and the malar bone. fstula (fis’tu-lah), pl. fis’tude [L. “pipe”. A deep, sinuous ulcer, often leading to an internal hollow organ. abdominal f., a pa age leading from the abdominal surface to some one of the hollow abdominal viscera. aérial f., an opening in the neck leading to the trachea or other part of the air-pa ages. amphibolic f., an opening made into the gall-bladder of an animal in order to obtain bile for study. The common bileduct is left intact so that the bile may flow through it when the fistula is closed. anal f., a fistula near the anus, which may or may not communicate with the rectum. jiary f., a fistula into the gall-bladder. blind f., one that is open at one end only. blind f., external, a blind fistula that opens upon the skin. blind f., internal, one that opens upon a mucous surface. branchial f., an unclosed branchial cleft. f. cervicovaginal’is laqueat’ica, a fistula in the vaginal portion of the cervix uteri, between the uterine canal and the vagina. coccygeal f., a fistula near the coccyx leading to a dermoid cyst of that region. complete f., one that opens upon the skin and also upon an internal cavity.