CENTESIS 



167 



CEPHALOPAGY 



governing the perception of printed or written 

 words. 



Centesis (sen-te'-sis) £«rr/;<7/c, a pricking]. Puncture ; 

 perforation. 



Centifidous (sen-tif -id-us) [centum, a hundred ; fin- 

 dcre, to split] . Cleft into many or loo parts. 



Central. (See Illus. Diet.) C.-horn. See Centriole. 

 C. -spindle, the primary spindle of the mitotic figure, 

 as distinguished from the surrounding contractile man- 

 tle-fibers. C. -symmetric. See Plane-symmetric 

 (Illus. Diet.). 



Centrality (sen-tral'-e-te). Applied to the condition 

 of nervous phenomena originating in the central ner- 

 vous system and not in the peripheral nerves. 



Centrifugalization (sen-trifu-gal-e-za'-shun)[centrum, 

 the center; fugere, to flee]. The use of a centrifuge. 



Centrifuge (sen'-trif-u/) [centrum, the center; fugere, 

 to flee]. A centrifugal machine; an apparatus for 

 separating substances by centrifugal force. 



Centriole (sen' -tre-bl ') [centrum, a center]. Boveri's 

 term for a minute body, central-horn, contained within 

 the centrosome ; in some cases it is not distinguishable 

 from the latter. 



Centrodesmus {sen-tro-des* -mus) [nivrpov, center ; 

 denude, a band]. Heidenhain's term for the band 

 primarily connecting the centrosomes and giving rise to 

 the central-spindle. 



Centrodontous (sen-tro-don'tus) [nevrpov, a sharp 

 point; bdoic, a tooth]. Furnished with sharp-pointed 

 teeth. 



Centrodorsal (sen-tro-dor'-sal). Pertaining to the 

 central dorsal region. 



Centrophose (sen' -tro-fos) [nivrpov, center; oitq, light]. 

 See under Phose. 



Centrosclerosis, Centroosteosclerosis (sen-tro-shler- 

 4/ -sis, sen-tro-os-te-o-skler-</-sis) [nivrpov, center; gk/jj- 

 poc, hard]. Osteosclerosis of the central cavities of 

 bones. 



Centrosome. (See Illus. Diet.) 2. An organ of the 

 cell, usually diminutive, lying within th,e nucleus or 

 near by in the cytoreticulum. It is regarded as the 

 especial organ of cell -division and in this sense as the 

 dynamic center of the cell. Syn., Daugkter-periplast ; 

 Attraction-particle ; Polar corpuscle. C.s, Quadrille 

 of, the conjugation of paternal with maternal centro- 

 somes, based upon the view that each germ-cell con- 

 tributes a centrosome that divides into two daughter- 

 centrosomes; also called quadrille of centers. 



Centrosphere (sen'-tro-sfer). See Sphere of Attraction 

 (Illus. Diet.). 



Centrostaltic (sen-tro-stal'-tik) [at it pov, the center; 

 cri'/./.tiv, to compress]. Relating to the action of ner- 

 vous force in a spinal center. C. Motion, the motion 

 of nervous force in the spinal center. 



Centrosteosclerosis {sen-tro-ste-o-skler-o' -sis). See 

 Centrosclerosis. 



Centrum [pi., central- (^ ee I' ms - Diet.) 2. A spine; 

 a pointed projection. C. cinereum, the gray com- 

 missure of the spinal cord. C. commune, the solar 

 plexus. C. geminum, the capsula. C. medullare 

 vermis. See Center, Medullary. C. ovale (of 

 Flechsig). See Triangle, Median (of Gombault and 

 Philippe). C. ovale laterale. See C. oz-ale minus 

 (Illus. Diet.). C. ovale Vieussenii, the central 

 white matter seen on making a section of the brain at 

 the level of the upper surface of the callosum. Syn., 

 C. semioz-a'e I'ieussenii ; C. ovale majus et minus ; C. 

 medullare : Medulla : Centra oz-alia of Hca d' Azyr : 

 Tegmentum ventriculorum. Centra ovalia ( of Yicq 

 d'Azyr). See Centrum ovale Vieussenii. C. rubrum. 

 See Xucleus tegmenta (Illus. Diet.). 



Cepa (set -pah). See Allium cepa (Illus. Diet.). 



Cephaelin (sefa / -el-in). C 14 H l9 XO r An alkaloid 

 found in ipecac ; fine, white needles soluble in ether 

 and caustic alkalis; a powerful emetic. Dose, j$—\ 

 gr. ( 0.004-0.016 gm.). 



Cephalanthin (sef-al-an' -thin). See under Cephal- 

 anthus. 



Cephalanthus (sef-al-an' -thus) [Ktoa'/t), head ; avOos, 

 a flower]. A genus of rubiaceous plants. C. occi- 

 dentalis, button-bush, crane-willow of North Amer- 

 ica ; its bitter bark is laxative and tonic and is used in 

 periodic fevers and paralysis. The bark contains 

 cephalin, cephaletin, and a toxic principle cephalan- 

 thin, which according to Mohrberg causes destruction 

 of the red blood corpuscles, vomiting, convulsions, and 

 paralysis. 



Cephalartic (sefal-arl'-ih). See Cephalocathartic (Il- 

 lus. Diet.). 



Cephaledema, Cephalcedema (sef-al-e-de / -mah) 

 [keoa~/.i], the head ; oldeiv, to swell]. Edema of the 

 head ; cerebral edema. 



Cephaletin (sefaF-et-in). See under Cephalanthus. 



Cephalhematocele, Cephalhaematocele. (See Illus. 

 Diet. ) C, Stromeyer's, subperiosteal cephalhem- 

 atoma communicating with veins and becoming tensely 

 filled during strong expiratory efforts. 



Cephalhematoma, Cephalhematoma. (See Illus. 

 Diet. ) 2. Caput succedaneum. C, External, an 

 effusion between the pericranium and the skuli. C, 

 Internal, an effusion between the dura and the skull. 



Cephalhematometer (sefal-hem-at-om'-et-ur) [woa/i), 

 the head; aiua, blood; uirpov, a measure]. An ap- 

 paratus for the estimation of the increase or diminish- 

 ment of the amount of blood within an animal's head. 



Cephalic. (See Illus. Diet.) 2. Anv remedy for the 

 headache. C.-fold. See Head-fold (Illus. Diet.). 

 C. Neck. See under A'ech. 



Cephalin. ( See Illus. DicL ) 2. See under Cephalan- 

 thus. 



Cephaline (se/ 7 -al-en). A proprietary headache remedy 

 said to consist of antipyrin and pulverized coffee, each 

 5 parts, and caffein and sodium salicylate, each 2 parts. 

 Dose, 4 gr. 



Cephalitis. ( See Illus. Diet ) C. aegyptiaca, an epi- 

 demic form of encephalitis occurring in Egypt during 

 the hot winds of early summer. C. littriana, inflam- 

 mation of the epiphysis. C. meningica, meningitis. 

 C. nervosa, pertussis. 



Cephality (sef-af-e-le) [jrepa/jy, the head]. Agassiz's 

 term for the preponderance of the head over the re- 

 mainder of the organism. 



Cephaloclasia (sef-al-o-kla f -ze-ah). See Cephalotripsy 

 (Illus. Diet.). 



Cephalofacial {sef-al-o-fa / -shal). Relating to the skull 

 and to the face. 



Cephalogaster ( sefal-o-gasf '-tur) [neoa/i;, head ; 3 ac- 

 rijp, stomach]. The anterior division of the enteric 

 canal, as in certain parasitic worms, where it is con- 

 tinued into a second division, the typhlosole. 



Cephalohemometer (sef-al-o-hem-om'-et-ur) [kzoo'/.i;, 

 head; aiua, blood; uirpov, measure]. An instru- 

 - ment for noting changes in the intracranial blood- 

 pressure. 



Cephalomenia (sef-al-o-me / -ne-ah) [Kton'/ij, head; uhv, 

 a month]. Vicarious menstruation through the nose. 



Cephalomyitis (sef-al-o-mi-t y -tis) [keoo///, head; hi\, 

 a muscle]. Inflammation of the muscles of the head. 



Cephalonasal \ sef-al-o-na J -sal). Relating to the skull 

 and the nose. 



Cephalonia (sef-al-cf -ne-ah) [woa/i), head]. Macro- 

 cephaly with hypertrophy of the brain. 



Cephalopagy (sef-al-op' -aj-e) [Kt^a'tt), the head; 

 TT/yvvvai, to join]. That form of monstrosity marked 



