

KARYOGAMIC 



637 



Karyogamic {kar-e-o-gam' -ik) [napvov, nucleus ; yduoe , 

 marriage]. Pertaining to the blending of nuclei, as 

 reduction. 



Karyokinesis {kar-e-o-kin-e* '-sis) [napvov, a nut (nu- 

 cleus) ; au'w/ovc, movement, change] . A complicated 

 series of changes accompanying the maturation of the 

 ovum and the extrusion of the polar globule ; indirect 

 or nuclear cell-division, characterized by a radiate ar- 

 rangement of the protoplasm immediately about the 



i " centrosome *' and the "sphere of attraction" at 

 one pole, but outside of the nucleus, and following 

 the division of the "sphere of attraction" into two 

 halves of clear protoplasm ; also, by changes in the 

 nucleoplasm, the chromatin becoming granular and 



A/ S. By 



Karyokinesis. 



'\. Nuclear reticulum, resting stage. B. Preparing for divi- 

 sion. C. Wreath stage. D. Monaster with achromatic 

 spindle. E. Barrel or oithode stage, or metakinesis, i. e., 

 chromatin-fibrils traveling along the achromatic spindle 

 toward the poles. F Diaster. G. Daughter-wreath stage. 

 H. Daughter-cells passing to resting-stage. 



arranged as a transverse band or disc, while the achro- 

 matin is transformed into threads {karyomita), form- 

 ing a spindle-shaped structure {nuclear, spindle, 

 barrel-form, pithos), stretching between the two astral 

 systems, or suns. The entire arrangement, central 

 disc, spindle, and the two suns, constitutes the so- 

 called amphiaster, or diaster, and, in connection with 

 the production of the polar globules, the archiamphias- 



| ter. The groups of the Y-shaped chromatin-grains, 



i produced by the division of the central disc, are then 

 translated to the ends of the spindles, and form two 

 polar crowns {Carnoys couronne polaire, the wreaths, 

 rosets, spirems) ; the spindle-threads break and are 

 drawn toward the polar crowns, and two daughter-nu- 

 clei result. 



'laryokinetic {kar-e-o-kin-et f -ik) [napvov, nucleus ; 

 nivrpw;, motion]. In biology, applied to the active 



i stages of nuclei. 



•.aryolysis {kar-e-ol 1 '-is-is) [napvov, nucleus ; /.ieiv, to 

 loose]. The segmentation of the nucleus of the cell. 



\aryolytic {kar-e-o-lif -ik) [napvov, nucleus ; Xveiv, to 



. loose] . Relating to karyolysis. 



'.aryomita {kar-e-o 1 '-mit-ah) [napvov, nucleus ; uiroc, a 

 thread]. In biology, the achromatin-threads forming 



1 the nuclear spindle in a dividing or active nucleus. 



KATHODIC 



Karyomitoic {kar-e-o-mit-o f -ik) [napvov, nucleus ; /«roc, 

 a thread]. Relating to karyomitosis. 



Karyomitoma {kar-e-o-mit-o f -mah). See Cell-bedy. 



Karyomiton {kar-e-om' -it-on) . See Chromatin. 



Karyomitosis {kar-e-o-mit-o' -sis) [napvov, nucleus ; 

 uiroc, a thread]. The division or splitting of the 

 nuclear mass of chromatin-fibers. 



Karyomitotic {kar-e-o-mit-ot' -ik) [napvov, nucleus ; 

 fiirog, a thread]. Relating to karyomitosis. 



Karyoplasm {kar' -e-o-plazm) [napvov, a nut, kernel ; 

 -'/.aaua, anything formed]. In biology, the nuclear 

 substance of a cell. See Chromatin. 



Karyoplasma {kar-e-o-plaz' '-mah). Same as Karyo- 

 plasm. 



Karyosoma {kar-e-o-so / -mah) [napvov, nucleus ; aaua, 

 a body, //., Karyosomata]. A nuclear microsoma ; 

 a round body resembling a nucleolus, contained in the 

 segmentation-nucleus of the ovum. 



Karyostasis {kar-e-os' '-ta-sis) [napvov, nucleus; ard- 

 oig, a stoppage]. The resting-stage of nuclei of cells. 

 It is opposed to karyokinesis. 



Karyostatic {kar-e-o-staf -ik) [napvov, nucleus ; araotc, 

 a stoppage]. Pertaining to karyostasis. 



Karyostenosis {kar-e-o-ste-no / -sis) [napvov, a nucleus ; 

 orevoc, narrow ; arevoetv, to make narrow] . The sim- 

 ple division of the nucleus of a cell. This process 

 is called also akinetic, or direct division. 



Kassu {kas / -oo) [E. Ind.]. A black astringent sub- 

 stance obtained from areca nuts, and used for the 

 same purpose as true catechu. 



Kata- {kat'-ah-). For words thus beginning, and not 

 found under K. , see Cata-. 



Katabolergy {kat-ab-oP '-er-Je) . See Catabolergy . 



Katabolic {kat-ab-ol' -ik). See Catabolic. K. Nerves, 

 thermo-excitory, as distinguished from anabolic, or 

 thermo-inhibitory, nerves. 



Katabolism {kat-af '-o-lism). See Catabolism. 



Katacrotic {kat-ak-rot / -ik). Same as Catadicrotic. 



Katadicrotic {kat-ah-di-krot / -ik). See Catadicrotic. 



Katadicrotism (kat-ad-ik / -rot-izm). See Catadicrotism. 



Katadidymus {kat-ad-id f -im-us). See Catadidymus. 



Katalepsy {kat 1 '-al-ep-se). See Catalepsy. 



Katalysis {kat-aP -is-is). See Catalysis. 



Katantostomus {kat-an-to-sU/ -mus). See Catantosto- 

 mus. 



Katanturaniscus {kat-an-tiir-an-is' -kus). See Catan- 

 turaniscus. 



Katanturanus {kat-an-tiir 1 '-an-us). See Catanturanus. 



Kataplasm {kaf-ap-lazm). See Poultice. 



Katastate (kat / -as-tat). See Catastate. 



Katatonia {kat-at-tZ-ne-ah). See Catatonia. 



Katelectrotonic {kat-el-ek-tro-ton'-ik). See Catelectro- 

 tonic. K. Zone. See Zone. 



Katelectrotonus {kat-el-ek-trot^-o-nus). See Catelec- 

 trotonus. 



Katharophore {kath-ar / -o-/or) [nadapoc, clean ; oopcetv, 

 to carry]. An instrument for cleansing the urethra. 



Katharsis {kath-ar / -sis). See Catharsis. 



Kathetometer {kath-et-om' '-et-er) [nard, against ; uir- 

 pov, measure]. An instrument for ascertaining the 

 level of fluids. 



Kathion {kath'-e-on). See Cation. 



Kathode {kath'-od) [nard, down; b66c, path]. The 

 negative pole of a galvanic battery. 



Kathodic {kath-od' -ik) [nard, down ; ddoq, path]. 

 Pertaining to the kathode or negative pole of a galvanic 

 battery. In biology, turned in the opposite direction to 

 that of the genetic spiral. K. Closure-contraction, 

 the muscular contraction occurring when the circuit 

 is closed with the rheophore on a motor point. K. 

 Opening-contraction, the muscular contraction that 

 occurs when the circuit is opened. 



