APERTURA

(Lat.), n. f. A*p(asp)-u*r(e?r)-tu?(tu)ras. See APERTURE.—A. ad ventriculum tertium, A. anterior, A. anterior ventriculi tertii cerebri. See FORAMEN of Monro and Irer ad infundibulum.—A. aquæduct us cochleæ. The small openiny, of the aqueduct of the cochlea, on the posterior surface of the petrous portion of the temporal bone, directly beneath the internal auditory meatus. [L.J—A. eanalis facial is spuria. The hiatus Fallopii (g. v.). [L, 115.1—A. chord. The internal opening of the canal for the chorda tympani. [L,7.]—A. declivis [Will is]. See Anus (8d def,),—A. extern a a qui educt us cochleæ. A small foramen in the temporal bone, immediately below the internal auditory meatus. [L 115, 142.) Cf. Aquapuctus cochlew.—A. extern a a qui educt us vestibuli. A fi ure, covered by a depre ed scale of bone, on the posterior surface of the petrous portion of the temporal bone, about 3 lines behind the carotid canal. {L, 142.] Cf. Aquæpuer us vestibuli—A. exterior (seu extern a) canal is inguinal is. See External abdominal rinc.—A. inferior canaliculi (seu canal is) tympanic i. An opening on the lower surface of the petrous portion of the temporal bone, between the Jugular fo a and the carotid canal. [L, 115.1 —A. inferior canal is incisivi. The inferior aperture of the incisor canal of the superior maxilla. [L, 115.|—A. inferior ventrieull quart i. See FORAMEN cœcum.— À, interior canal is inguinal is. See Internal abdominal rin a.—A. intern a aquæduct us vestibuli. The internal opening of the a que educt us vestibuli, within the vestibule. [L, 115.|—A. intern a canal is femoral is. See Femoral rING.— A. intern a canal is inguinal is. See Internal abdominal RING —A. lateral is ventriculi quart i. An opening above the chor oid plexus in the fourth ventricle, communicating with the subarachnoid space. [Key and Retzius (L, 81).]-Aperturæ narium anteriores (seu externæ). See Anterior NARES.—Aperturæ narium intern a (seu poster i ores). See Posterior NARES.—A. pelveos (seu pelvis) abdominal is. The superior strait of the pelvis, [L.31.]J—A. pelveos (seu pelvis) inferior (seu per inæalis). The inferior strait of the pelvis, [L, 115.j—A. pelveos (seu pelvis) superior. The superior strait of the pelvis. [L, 115.] —A. pyriform is narium, e triangular anterior opening of the nasal pa ages in the skull, [L, 115.—A. sealæ vestibull cochleæ. An opening by which the vestibule of the ear communicates with the scala tympani. [L, 115.]—A, sinus in axillar is, See Hiatvs mazillari: » Spinal is. See Vertebral FOR A ME: ‘A. spuria canal is facialls (seu Fallopii). See Hrarus Fallopi A. superior canaliculi (seu canal is) tympanicl. The internal opening of the tympanic canal, in the groove on the upper surface of the petrous portion of the temporal bone. [I.,115.|—A. superior eanalis incisivi, The superior opening of thé anterior alatine canal. [L, 31.]—A. thoracis inferior. The lower opening of the thorax. [L, 115.]—A. thoracis superior. The upper opening of the thorax. [L, 115.J—A. uterina tubæ. The uterine mouth of the oviduct. [L, 115.)