PHC.
11.23.
CnHHaJIbHb,e HepSbl y HOpMaJIbHoft CaJIaMaH)I,pbl
(CnpaBa)
H y CaJIaMaH,ll;pbl. KOTC>-
poll TpaHCnJIaHTHpOSaHa )l,OnOJIHHTeJIbHali HH:lKHlIli KOHeqHOCTb
(C/leBa).
HepSbI H COOTseTcTsylO-
Il\He qYSCTSHTeJIbHble raHrJIHH. H)I,YIl\He K c06cTBeHHoll H TpaHcnJIaHTHposaHHoll KOHeqHOCTH.
KpynHee. qeM HepBbI. cHaCl:lKalOll\He TOJIbKO cTeHKy TeJIa (no
[17)).
HO IIpHBO,lVIT TaK2Ke K YMeHbIlleHHIO pa3MepOB COOTBeTcTByIOIJl.erOtIyB-
CTBHTe~bHOrO raHr~H~ H BeHTpa~bHOrO (~BHraTe~bHOrO) pora CIIHH-
Horo M03ra. YMeHbIlleHHe pa3MepOB 3THX CTpyKTyp IIPOHCXO~HT B
pe3Y~bTaTe rH6e~H 3HatIHTe~bHoro KO~HtIeCTBa HepBHbIX K~eTOK. C~e-
,lI,yeT OTMeTHTb, tITO MHoro HeiipOHOB rH6HeTB CIIHHHOM M03ry .zr.a2Ke
B xo~e HopMa~bHor6 pa3BHTH~ (pHC. 11.22). B IIO~CHHtIHOii 06~acTH
CIIHHHoro M03ra HopMa~bHoii IllIIOpIJ,eBOii ~~rYIllKH K nepHO,lI,y MeTa-
Mopep03a ~ereHepHpyeT OKO~O 90
%
~BHraTe~bHbIX HeiipoHoB
:[33].
Iloc~e y~a~eHHH IIOtIKH KOHetIHOCTH3epepeKTeIJl.e 6o~ee nopa3HTe~eH.
faM6yprep '[21] y~a~~~ nOtIKy Hom 2,5-~HeBHoro KypHHoro 3apo~bI-
Illa H K 6-My H~H 7-My ,lI,HIO06HapY2KH~ MaccoByIO rH6e~b K~eTOK, tITO
B KOHetIHOMHTore IIpHBe~o K 3~HMHHaIJ,HHIJ,e~oii nonY~~IJ,HH (20000)
,lI,BHraTe~bHbIX HeiipoHoB, npe,lI,Ha3HatIeHHbIX ~~H HopMa~bHoii HHHep-
BaIJ,HHKOHetIHOCTH.BMecTe C TeM ,lI,06aB~eHHe nepHepepHtIeCKOii TKaHH
(HanpHMep, IIpH TpaHcn~aHTaIJ,HH IIOtIKH KOHetIHOCTHHa .60K paHHero
3apo~bIIlla) npHBO,lI,HT K IIopa3HTe~bHoMY YBe~HtIeHHIO pa3MepoB H
tIHC~a HepBHblx K~eTOK, npopaCTaIOIJl.HX B 3Ty o6~acTb (pHC. 11.23)
[17].
IloKa3aHo, tITO Ha pa3BHTHe HeKoTopbIX KOMnOHeHTOBHepBHoH
CHCTeMbIB~HHIOTCneIJ,HepHtIeCKHeXHMHtIeCKHeBeIJl.eCTBa.<l>aKToppOCTa
HepBOB- 6e~OK, BbI,lI,e~eHHblii H3 HeKOTopbIX HopMa~bHbIX H naTO~O-
nitIeCKHX TKaHeii M~eKOnHTaIOIJl.HX,CTHMY~HpyeT POCT tIYBCTBHTe~b-
HbIX HeiipOHOB (oc06eHHO CHMIIaTHtIeCKOii HepBHoii CHCTeMbI) y MHO-
rHX 3ap0,lI,bIIlleii n03BOHOtIHbIX 2KHBOTHbIX[44]. 06Hapy2KeHHe epaKTo-
pa pOCTa HepBOB IIo6Y,lI,H~0 HCCne,lI,OBaTe~eiiK nO~CKaM ,lI,pyrHx cne-
UHepHtIeCKHXXHMHtIeCKHXareHTOB, CIIoc06HbIX OKa3bIBaTb B~H~HHe Ha
pa3BHTHe HepBHoii CHCTeMbIH HHbIXCTPYKTYPopraHH3Ma.
qepenHble
HepBbI. OnHCbIBaH CIIHHa~bHble HepBbI, MbI BbI,lI,e~H~H
qeTblpe epYHKIJ,HOHanbHbIXTHIIa HeiipOHOB: COMaTHtIeCKHe aepepepeHT-
Hble COMaTHtIeCKHe 3epepepeHTHble, BHcuepa~bHble aepepepeHTHble H
BHc~epa~bHble 3epepepeHTHble (pHC. 11.1). Cpe,lI,H HeiipoHoB tIepeIIHblx
HepBoB MbI HaXO,lI,HMHe TonbKO TaKHe 2Ke THIIbI, HOH HeiipOHbI C 60~ee
orpaHHtIeHHbIM pacnpe~eneHHeM CBOHXOKOHtIaHHii H 6o~ee CIIeIJ,HanH-
3HpoBaHHbIMH epyHKIJ,HHMH(pHC. 11.24). fna3 H yxo, HaIIpHMep, IIpe.u.-
CTaB~~IOT c060ii BbICOKO,lI,HepepepeHIJ,HpOBaHHbleH tIeTKO nOKa~H30BaH-
Hble opraHbI tIyBCTB. Cne,lI,OBaTenbHo, HX BonOKHa OTnHtIaIOTC~ OT
06IJl.HX COMaTHtIeCKHXaepepepeHTHblx BonOKOH H ~B~HIOTC~
cne/,fuaAb-
HblMU COMaTUt.teCIWMU arjJrjJepeHTHblMU BOAOKHaMU.
¥l3 BKyCOBbIX
nOtIeK no tIYBCTBHTenbHbIM BonOKHaM BKycoBble HMnY~bcbI H,lI,YTK
M03ry. IlocKo~bKY nO,lI,06Hble BonOKHa aCCOIJ,HHpOBaHbIC opraHaMH
cneIJ,Ha~bHbIX tIyBCTB, BOCIIpHHHMaIOIJl.HXIIpHKocHoBeHHe, TeMIIepaTy-
py, 60~b, OHH Ha3bIBaIOTC~
cne/,fuaAbHbLMU Buc/,fepaAbHbLMU arjJrjJepeHT-
HblMU BOAOKHaMU.
MycKy~aTypa 06nacTH rmfrKH OT~HtIaeTCH OT BHC-
IJ,epanbHoii MycKynaTypbI ,lI,pymx 06nacTeii Tena TeM, tITO OHa o6pa-
30BaHa IIOIIepetIHOIIOnOcaTbIMH MbIIlletIHbIMH BO~OKHaMH. Il03ToMy
HHHepBHpyIOIJl.Heee ,lI,BHraTenbHble BonOKHa OTnHtIaIOTCH OT ~pyrHx
BHCIJ,epa~bHblx 9epepepeHTHblx BonOKOH H Ha3bIBaIOTCH
cne/,fuaAbHbLM.U
Buc/,fepaAbHbLMU arjJrjJepeHTHbLMU BOAOKHaMU.
CIIHHanbHble HepBbI paCIIOn02KeHbI cerMeHTapHo H HMeIOT O,lI,HHa-
KOBblii II~aH CTpoeHHH. <l>H~oreHeTHtIeCKH tIepeIIHble HepBbI Ta
'
K2K:-
BepoHTHo, IIPOHCXO~HT ~T cerMeHTHpoBaHHbIx CTpyKTyp rO~OBHOH
06nacTH, HO OHHyTpaTHJ1H CBoe H3HatIa~bHOe perY~HpHoe paCIIO~02Ke:
HHe H CTa~H BbICOKOCIIeIJ,HanH3HpOBaHHbIMH.OTCyTcTBHe COe,lI,HHeHHH
,lI,OpCa~bHoro H BeHTpanbHoro KopeIllKOB B tIepenHbIX HepBax HBnHeTC~
r~aBHbIM OTnHtIHeM HX OT CIIHHanbHbIX HepBOB. TaKHM 06pa30M, 60~b-
IllHHCTBO tIepeIIHbIX HepBOB MneKOIIHTaIOIJl.HXB epH~oreHe3e IIPOH30Ill-
~H OT IIpHMHTHBHoro (IIepBHtIHOro) ,lI,opCanbHoro HnH IIpHMHTHBHoro
BeHTpa~bHoro KopeIllKOB. .uBa tIepeIIHbIX HepBa - 060H~Te~bHblii
(I)
H 3pHTe~bHblii
(II) -
6bmo 6bI IIpaBH~bHee paCCMaTpHBaTb He KaK
HCTHHHble HepBbI, a KaK IIp0,lI,On2KeHHeTpaKTOB ronOBHoro M03ra.
HeKOTopble tIepeIIHble HepBbI
(III, IV, VI
H
XII),
BepoHTHo, B03-
HHK~H H3 IIpHMHTHBHbIX BeHTpanbHblx KopeIllKoB. aTO IIo,lI,TBep2K,lI,aeT-
CH MHOTOMHbIMIIpOHCX02K,lI,eHHeMHHHepBHpyeMblx HMH MbIIllIJ, (r~a30-
,lI,BHraTe~bHble MbIIllIJ,bI H MbIIllIJ,bI H3bIKa) H II03BonHeT K~accHepHIJ,H·
pOBaTb HX KaK COMaTHtIeCKHe~BHraTe~bHble HepBbI (pHC. 11.24). P5I.lI..
tIepenHblx HepBoB
(V, VII, IX, X
H
XI)
M02KHOCtIHTaTb IIPOHCXO,lI,H-
IJl.HMH H3 IIepBHtIHbIX ,lI,OpCa~bHblx KopeIllKoB. OHH HecyT He TO~bKO