I WAI 



25 » 



( WAI. 



cordi, the small canal that extends through the center 

 of the spinal cord from lh< conus medullaris to the 

 lowi trii le. It represents 



anal. C, Cerebro-spinal, 



i I he iuu: irmed bj the 



; and lh( lining the brain and spinal 



mai All > "' 'he 



or less 



1 in the latter, but in the former 



■mi of the several ventricles and other 



C, Cervical. - n. C, 



Ccrvico-uterine. See C. of Cervix 



Uteri, that | t the uterine canal that extends 



. the internal and external os. C. of Chorda 



Tympani, a small canal in the temporal bone, be- 



us portions, parallel with 

 ; it transmits the chorda tympani 

 C, Chyleaqueous, in certain invertebrates, a 

 water and digestive pro- 

 duct- C, Ciliary. C, Cir- 

 cular, in thi . a vessel surrounding the 

 1 with th r by the madre- 

 nal, and . mbulacral canals. C. 

 clavellaris, in i al canal running into the 

 olfa C., Cloacal. See ('. , 

 C. of Cloquet. See C, Hyaloid. C, 

 Cochlear, the spiral ami snail-like cavity of the 

 in. long. The base is turned 

 inward toward the internal auditory meatus, and the 

 \ outward toward the tympanum. C. of Com- 

 munication, in the embryo of the fowl, canals that 

 run from the cavity of each protovertebra to the pleuro- 

 C.| Connecting, the arched or coiled 

 of a uriniferous tubule, joining with a collect- 

 tubule. C, Corona, in biology, the coronal in- 

 ne of Al Same as Pouch corona. C. of 

 Corti, the triangular canal formed by the pillars of 

 se of which corresponds to the membrana 

 It extends over the entire length of the 

 lamina spiralis. C. of Cotunnius. See Aqueduct 

 C, Cranio-vertebral. Sec C, 

 nd »'.. Neural. C, Crural. 5 

 C, Ctenophoral, in the Clenopkora, 

 t canals connected at right angles with the tertiary 

 d canals, and corresponding in their course with 

 tive bands. C. of Cuvier, the ductus 

 C, Cystic, the cystic duct. C. of De 

 Candolle. See C, Medullary. C., Deferent, the 

 C, Demicircular. See C, Semi- 

 C Dental, Anterior, one extending 

 into the facial portion of the superior maxilla; it 

 tra: ir dental . es. C, 

 Dental, Inferior, the dental canal of the inferior 

 ilia; it transmits the inferior dental and 

 C, Dental, Posterior, two canals in I 

 r maxilla. They transmit the superior posterior 

 C, Dentinal, thi i 

 ling approximately at right- 

 of a tooth from I Ip cavity, 

 mentum and enam 

 C, Digestive. nentary. C. of Diploe, 

 in the d • ranium transmitting 

 C, Efferent. I. ■ ' . / ur- 

 ting the testicles 

 C, Ejaculatory. 

 Du C. of Epididymis, a convoluted 



■' . f rming 

 the • I,,. 



C. Eschricht's Yellow, in f the . a 



fertilizing canal, 

 ■minating in i C., Eth- 



moidal, Anterior, i the ethmoid 



frontal bones; it transmits the nasal branch of the 

 ophthalmic nerve, and the anterioi ethmoidal ves 

 sels. C, Ethmoidal, Posterior. See (., Orbital, 

 , Internal. C, Eustachian, one in the 

 petrous portion of the temporal bone, containing a 

 portion of the Eustachian tube. C, Excurrent, in 

 sponges, the tubes that carr) water from the ciliated 

 chambers to the exterior. C, Facial, the aqueduct 

 of Fallopius; it transmits the facial nerve. C, Fal- 

 lopian. See Aqueduct of Fallopius. C, Femoral. 

 I. The inner compartment of the sheath of the femoral 

 vessels behind Poupart's ligament; a femoral hernia 

 descends through this. 2. See ('.. Hunter's. C. of 

 Ferrein, a triangular channel, supposed to exist 

 between tb< Iges of the eyelids when they are 



closed, and to Serve for Conducting the tears toward 



the puncta lachrymalia during sleep. C, Fertilizing, 

 in many cestoda, a tube connecting the vagina and the 

 uterus. C, Fibro-adipose, in certain fishes, a canal, 

 tilled with adipose tissue, on the dorsal side of the neural 

 canal. C. of Fontana, a series of small spai es lormed 

 by the interlacing of the connective tissue fibers of 

 the framework of the peripheral proci >es of the 

 iris, situated in the angle of the anterior cham- 

 ber, and serving as a medium for the transudation 

 of the aqueous humor from the posterior to the 

 anterior chamber of the eye. They are also called ('. 

 of ffovius, C, Ciliary, and Fontana? s Spaas. C, 

 Galactophorous, the lactiferous tubules of the 

 mammary gland. C. of Gartner, in the female, a 

 relic of the main portion of the Wolffian duct of 

 the embryo; it is a tube extending from the broad 

 ligament of the uterus to the wall of the uterus and 

 vagina. C, Gastro-vascular, in the //. 

 canals extending from the stomach into the substance 

 of the disc of the umbrella. C, Genital, in com- 

 parative anatomy, any (anal designed for copulation 

 or for the discharge of ova. C, Gonocalycine, a 

 sv-tem of canals found in the gonocalyx of the Ily- 

 drozoa. C. of Groin. See C, Inguinal. C. of 

 Guidi. See ('. , Vidian. C, Gynecophoric, in 

 Bilharzia, a groove extending from a little below the 

 ventral sucker to the end of the tail. It lodges the 

 female during copulation. C. of Havers. See C, 

 Haversian. C, Haversian, canals in the compact 

 stance of bone forming a wide-meshed 

 network, and establishing communication between 

 the medullary cavity and the surface of the bone 

 Their average diameter is rT, T inch, and they 

 are lined by a continuation of the endosteum ; they 

 transmit blood-vessels, lymph-vessels and nerves. 

 C, Hemal, one in the ventral surface of the vertebral 

 column, enclosed by the hemal arches; it is incom- 

 plete in certain portions. C. of Henle, a portion of 

 the uriniferous tubules. C, Hepatic. I. The exi 

 tory duet of the liver. 2. The radicles of the hepatic 

 C, Hernial, one transmitting a hernia. C. 

 of Hovius. See C. of Fontana. C. of Huguier. 

 See C. of the Chorda Tympani. C, Hunter's, a 

 triangular canal formed in the adductor magnus 

 mu< the thigh; it transmits the femoral artery 



and vein and internal saphenous nerve. C. of 

 Huschke, one formed by tin- junction of the tuber- 

 of the annulus tympanicus. This is generally 

 iter the fifth year, but may persist through 

 life. C, Hyaloid, an irregularly-cylindrical canal 

 running antero posteriorly through the vitreous body, 

 through which in the fetus the hyaloid artery pas 

 to ramify on the posterior surface of the crystalline 

 lens. C, Hyapophyseal, in birds, that formed by 

 the inferior spinous pro of the upper cervical 



; i| transmits the carotid artery. C, Inci- 



