ZONESTHESIA 



1629 



ZOO-CURRENTS 



brane extending from the lower edge of the spiral 

 ve of the cochlea to the external edge of the base of 

 The outer rods of Corti. Z. cartilaginea, the limbus of 

 the spiral lamina. Z. choriacea. Same as Z. cartilagi- 

 Z. ciliaris, the ciliary zone, or ciliary processes col- 

 lectively : the zone of Zinn, or the suspensory ligament 

 of die crystalline lens; a radially plicated modified 

 anterior continuation of the hyaloid membrane of the 

 vitreous body {Piersol). Z. denticulata, the inner 

 zone of the basilar membrane, together with the limbus 

 of the spiral lamina. Z. fasciculata, the central 

 portion of the cortex of the suprarenal capsule, com- 

 posed of tube-like transverse bands. Z. ganglionaris, 

 a collection of gray matter on the filaments of the 

 cochlear branch of the auditory nerve. Z. glomer- 

 ulosa, a zone of the cortical portion of the supra- 

 renal capsule, which has a net-like appearance on 

 section, situated near the surface of the organ. Z. 

 ignea. Synonym of Herpes zoster. Z. incerta. See 

 Regio subthalamica. Z. laevis. Same as Z. arcuata. 

 Z. mediana. Same as Z. cartilaginea. Z. nervea. 

 Same as Z. arcuata. Z. orbicularis, a thickening 

 of the capsular ligament around the acetabulum. Z. 

 pectinata, the outer zone of the basilar membrane, 

 extending from the rods of Corti to the spiral ligament. 

 Z. pellucida, the thick, solid, elastic envelop of the 

 ovum, corresj»nding to the cell-wall of a cell. It is 

 also called the vitelline membrane. It contains the 

 us or yolk, corresponding to the cell-contents of 

 the cell; the Germinal Vesicle (corresponding to the 

 nucleus of the cell), which last contains the Germinal 

 Spot, corresponding to the cell-nucleolus. Z. per- 

 forata, the lower edge of the spiral groove of the 

 cochlea. Z. perforata of the Cochlea, the inner and 

 perforated division of the lamina spiralis membranacea. 

 Z. radiata, the zona pellucida when the radiating 

 pore-canals are very distinct. Z. repens. Same as 

 Herpes zoster. Z., reticularis : I . The portion of 

 the cortex of the suprarenal capsule next to the 

 medullary portion. Here the spaces formed by the 

 transverse bands are of small extent. 2. The inner 

 layer of the cortical portion of the suprarenal body. 

 Z. serpiginosa. Synonym of Herpes zoster. Z. 

 spongiosa, the extreme dorsal tip of the posterior 

 horn of the gray matter of the spinal cord. Z. tecta, 

 the inner part of the lamina spiralis membranacea 

 covered by the organ of Corti. Z. tendinosa, a 

 fibrous ring situated at each auriculo-ventricular opening 

 in the heart. Z. valsalvae, the membranous spiral 

 ina of the cochlea. Z. vasculosa, the medullary 

 tance of the Graafian vesicles. Z. volatica. 

 me as Herpes zoster. 

 Zonaesthesia (zon-es-the' f -ze-ah). See Zonesthesia. 

 Zonal (zo'-nal) [zona, zone]. Pertaining to a zone, or 

 to the disease called zona. In biology, of or pertain- 

 ing to the subdivisions of an articulate or annulose ani- 

 mal. 

 Zonary (zo'-tiar-e) [zona, zone]. Characterized by or 

 pertaining to a zone. Z. Fauna, Hseckel's name for 

 the intermediate pelagic fauna discovered by Murray to 

 inhabit the zones of different depths of the ocean be- 

 tween the surface and the deep-sea bottom. Z. Pla- 

 centa. See Placenta. 

 donate (zo'-nat) [zona, a zone]. In biology, girdled or 



1 ; marked with concentric bands. 

 2one (ton) [zona, a band]. See Zona. Z., An- 

 electrotonic. See Z., Polar. Z., Cervical, the 

 lowest fourth of the internal surface of the uterus. Z., 

 Ciliary. See Zonula ciliaris. Z., Epileptic, a tract 

 of the integument irritation of which may give rise to 

 an epileptic attack. Z. of Haller. Same as Z. of Zinn. 

 Z., Hepatic. See Hepatic. Z., Hyperesthetic, a 



zone of the integument characterized by exalted sensi- 

 bility. Z., Hysteroepileptogenous, Z., Hystero- 

 genic, hyperesthetic areas in hysteric persons, where 

 pressure on the one hand calls forth well-marked phe- 

 nomena of hysteria, such as convulsions, or catalepsy, or 

 on the other hand checks an attack that is in progress. 

 The ovarian region and areas near the mamma are 

 hysterogenic zones. Z., Internal, of the Lenticular 

 Nucleus, a zone connected by transverse white 

 fibers with the internal capsule. Z., Katelectrotonic. 

 See Z., Peripolar. Z.,Lissauer's. Same as Lissauer's 

 Tract. Z., Ophthalmic. See Herpes. Z., Peripolar, 

 a term proposed for the zone or region surrounding the 

 polar zone on the body of a patient undergoing electro- 

 therapeutic treatment. Z., Placental, that portion of 

 the uterus to which the placenta is attached. Z., Polar, 

 a term proposed for the zone or region surrounding the 

 therapeutic electrode applied to the human body for 

 electric treatment. 



Zonesthesia (zo-nes-the* -ze-ah) [Cww/, a belt ; aia&iicic, 

 sensation]. Perverted feeling in which there is a 

 sense as of a cincture, or halter, or constriction about 

 a part ; also called Strangalesthesia and girdle-sensa- 

 tion. 



Zonociliate {zo-no-sil'-c-dt ) [zona, zone ; cilium, eye- 

 lid]. In biology, characterized by a circlet or zone 

 of cilia. 



Zonolimnetic (zo-no-lim-net'-ik) [~uvrj, a belt ; /.luvtjn/g, 

 living in marshes]. In biology, applied to such fresh- 

 water or limnetic organisms as are limited to certain 

 depths, as distinguished from autolimnetic (living only 

 at the surface), and bathylimnetic (dwellers in deep 

 waters). 



Zonoplacental (zo-no-plas-en' -tal\ [Zioxi], girdle ; pla- 

 centa]. Having a zonary deciduate placenta. 



Zonula (zo / '-nu-lah) [zonula, dim. of zona, zone]. A 

 little zone or belt. Z. ciliaris. See Zona ciliaris. 



Zonular (zo / -nu-lar) [zonula, a little zone]. Pertain- 

 ing to or of the character of a zonula, or a zone. Z. 

 Cataract. See Cataract. 



Zonule (zon'-ul) [zonula, a little zone]. A small 

 zone. Z. of Zinn, the suspensory ligament of the 

 crystalline lens of the eye. See Ligament. 



Zonulet (zo / -nu-lel) [zonula, zonule]. A little zone. 



Zoo- (zc/-o-) [l£x>v, an animal]. A prefix to denote 

 connection with or relation to animal life. 



Zoo-amylin (zo-o-am' ' -il-in) [Z(mv, an animal ; amy- 

 lum, starch]. Glycogen ; amyloid. 



Zoo-amylum (zo-o-am' '-il-um). See Paramyluvi. 



Zoobic, Zoobiology (zo-o'-bik zo-o-bi-ol'-o-gy) [-Tww, 

 animal ; 3ioc, life ; /oyoc, science]. In biology, terms 

 employed indifferently by Ducrotay de Blainville to 

 express the internal phenomena of the organism in 

 their relation to external conditions. 



Zoobiotism (zo-o-bi' -ot-izm) [ICiov, animal; 3ioc, life]. 

 Same as Biotics. 



Zooblast (zo'-o-blasl) [^ww, animal ; 3/.aar6c, germ]. 

 In biology, an animal cell. 



Zoocarp [zo'-o karp) [CCxrv, animal; napndc, fruit]. 

 See Zoospore. 



Zoocaulon (xo-o-kanZ-lott) [Z£xn\ animal; Kav?.6g, 

 stem, stalk]. In biology, the branching stalk of certain 

 colonial infusorians. 



Zoochemia (zo-o-ke* '-me-a/i) [ZCiov, an animal ; xW Eta i 

 chemistry] . The chemistry of animal life and tissres. 

 Biochemistry. 



Zoochlorella, (zo-o-klo-rel'-ah) [&uv, animal ; x'up^i 

 pale-green: //., Zoochlorellce]. In biology, one of 

 the green granules found in certain invertebrates. 

 Hydra viridis, Euglena, Stentor. Cf. Zooxanthella. 



Zoo-currents, or Zoorema (zo-o-kur'-ents, zo-o-re / - 

 mah)[£uov, animal ; pFvua, current]. In biology, local 



