Neiroanatomia - Dak.indd
Neiroanatomia - Dak.indd
Neiroanatomia - Dak.indd
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Tavi 5<br />
korvengenciisa da akomodaciis meqanizmi aseTia: qerquli centridan<br />
gamosuli nebismieri impulsebi midis zemo gorakebTan, saidanac<br />
Tvalis mamoZravebeli nervis birTvSi gadadis; Semdeg Tvalis mamoZravebeli<br />
nerviT, erTi mxriv, midis SigniTa swor kunTebTan da ganapirobebs<br />
Tvalis kaklebis SigniT miqcevas – konvergencias, xolo, meore<br />
mxriv, midis wamwamovan kunTTan da gugis Semaviwroebel kunTTan da<br />
iwvevs gugis Seviwroebas – akomodacias.<br />
zemo gorakebidan gamosuli aqsonebis nawili qmnis teqto-spinalur<br />
traqts da kontaqts amyarebs zurgis tvinis wina rqis motorul ujredebTan.<br />
am gziT xorcieldeba tanis, Tavisa da kidurebis refleqsuri<br />
moZraoba mxedvelobiT gaRizianebaze.<br />
sifilisuri – argail-robertsonis guga (`meZavis guga”) akomodaciis<br />
dros viwrovdeba, Tumca sinaTleze ar reagirebs da arc viwrovdeba.<br />
fiqroben, rom am dros dazianeba zemo gorakebis saproeqcio<br />
areSia lokalizebuli (sur. 36).<br />
SeuRlebuli xedva<br />
Tavis tvinis qerqis motoruli ubnebis dazianeba kidurebis kontralateralur<br />
damblas iwvevs. am dros ar xdeba Tvalis yvela kontralateraluri<br />
kunTis moZraobis daTrgunva. ubralod, orive Tvali<br />
kontralateraluri garemos aRqmis unars kargavs. mag., marcxena hemisferos<br />
optikomotoruli aris (brodmanis me-8 are) dazianebis dros<br />
avadmyofi Tvalebs ver amoZravebs marjvniv. aRiniSneba Tvalebis deviacia<br />
marcxniv. faqtobrivad, igi `dazianebisken ixedeba”. es imiT aixsneba,<br />
rom marcxena hemisfero marjvena lateraluri swori kunTisa<br />
(marjvena ganmzidveli nervi, me-6 wyvili) da marcxena medialuri swori<br />
kunTis (marcxena Tvalis mamoZravebeli nervi, me-3 wyvili) inervacias<br />
ganagebs (sur. 37). orive maTgani – marjvena lateraluri swori kunTi<br />
da marcxena medialuri swori kunTi – Tvalebs marjvniv atrialebs.<br />
mogrZo tvinis medialuri gaswvrivi konis bilateraluri dazianeba,<br />
romelic yvelaze xSirad gamovlindeba gafantuli sklerozis dros,<br />
erT-erTi Tvalis medialuri mimarTulebiT moZraobis unars zRudavs<br />
(sur. 37, 38). am dros SesaZlebelia Tvalebis konvergenciuli moZraoba,<br />
radgan konvergenciuli xedvis (Tvalebis moZraoba erTmaneTis<br />
Semxvedri mimarTulebiT) gza, iseve rogorc vertikaluri xedvis gza,<br />
gansxvavdeba lateraluri SeuRlebuli xedvis (koniugaciuri xedva,<br />
101
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