44 



K. H. flABHAOBT), 



nf-~- 



MepuaTejfeHMMH ptcHnqicaMH. TfecHaa CBH3b MeacAy ctehkoh n,eiOMa, cocToamefi h3t> hjiockhxi 

 KJiiTOKt, h n,HJiHeApHiecKHMi 3nHTejiieMT>, o6pa3yiomHMi) BOpOHKy, HecoMHiHea. 



Ha caMbixi paHHHXT> CTaAiHX^ o6pa30BaHia xo6oiearo He*pHAia MoacHo Hao\iK)AaTb mn\\> 

 Me30AepMajibHyio qacrb He<*>pHAia, KOTopaa KOHqaeTca cjteho. Ha CTaAin, H3o6paaceHHOH ea 

 pac. 36-h h 37-h, Me30AepMajbeafl BopoHKa TaKace KOHqaerca cxeho, ho Tenepbyace MoatHo Ha6jiH)- 

 AaTb Haqajo 3aiuaAKH BbiBOAHaro KaHaJianuopbijSepymHxicBoeupoHCxoacAeHierat 3KTOAepMbi. 

 Ohh 3aKjaAbiBaioTCfl nyTeMi> BnaqeHia BeyTpb xo6oia ea Aop3ajibHOH ero noBepxHOCTH 

 HeSojibmoro yqaenca snHTejria CTe6ejibKa, Ha KOTopoMt AepacnTca xo6ott>. 



Phc. 38-h npenpacHo HJUHocTpupyeri cKa3aHHoe. Ohi 

 B3o6paacaerL qacrb cpf>3a, B3HTaro h3t> toh ace cepin, koto- 

 paa AaJia HaMT> pasptsi., AeMOHCTpHpoBaBmifi ae.ioTeJiia.ib- 

 Hyio 3aK^aAKy HeopHAiajbHOH bopohkh (pnc. 37-h). 



Ha pasp-Esi, H3o6paaceHHOMT> Ha pacyHK'B 36-mt>, 6jia- 

 roAapa He6ojibuioiny yBejieqeHiio Hejib3a BHA'ETb AeTajieii, ho 

 3aTO npeKpacHO BHAHbi OTHomeHia nepHTOHeajibHOH bopohkh 

 kt> BbiBOAHOMy KaHajiy, npeACTaBJiaromeMy co6ok> HBBaniHH- 

 poBaBmifi yqacTOKi 3KTOAepMbi. 



3aMEqy, qTO Ha oahomi cTporo carHTTajibHOM'b pa3pf>3i 



06bIKHOBeHHO BeJIb3H Ha6jIK>AaTb OAHOBpeMeHHO H BOpOHKy H 



aKTOAepMHiecKia KaHajn., TaKi> icaKi ohh HaxoAHTca He bt> 

 oahoh hjockocth. Phc 36-h npeACTaBJiaerL H3T> ce6a KOMOH- 

 uanjio AByxi pa3pE30BX oahoh h toh ate cepin. 



^jih rHCTOJornqecKHXi AeTajea cqnraio HejramHHM'b npe- 

 BecTH nacTb em,e oAHoro h3t> pa3pi30Bi, cAtjiaHHbixi qepe3i> 



XOGOTb, npH AOCTaTO^HO CHJIbHOM'b VBeJIHieHiH. 



Phc. 39-h H3o6paacaeTT> qacTb cpi^a, H3o6paateHHaro Ha 

 pnc. 1-mt> b, npn CHJbHOMx yBejinqemH. 



3Atcb, MeatAy npoqnivi'b, npeKpacHO bhaho, hto BnaqHBaeTca 

 jiHuib caMaa Hapyacaaa qacTb 3KTOAepMajibHaro snare-iia CTe- 

 6ejibKa — BHyTpeHHaa ace ero noBepxeocTb, yace An**epeHn,HpoBaBinaaca bi cjiov, tslki, Ha3bi- 



BaeMOH HOAKOaCHOH HepBHOBOJOKHHCTOH TKaBH, KOTOpblH pa3BHTT> nOBCeMECTHO HOA^ SKTOAepMOH 



Enteropneusta, He npHHHMaen. yqacrifl be o6pa30Baiiin eapyacHOH bmboahoh nopw. (Cm. Tanace 

 pnc. 38-fi). 



Ha onocaHHOH CTaAiH ooa 3aqaTKa: Me30AepMajbHaa BopoHKa n aKTOAepiuajibHoe Bnaqeme — 

 3aqaTOKi> bmboahoh qacrH He*pHAiajibHaro KaHaia — era,e oqeHb yAajieHbi Apyn> ort Apyra. 



npn AaJibHtHmeMT) pa3BHTiH He*pHAia Ha6jnoAaioTca ABa CJiyqaa: 



1) 3KTOAepiviajibHoe BnaqeHie noqTH He yBejiHqnBaeTCfl bt, CB0HX^ pasiviipaxx, TorAaKaifL, 

 Hao6opoTi, Me30AepMajibHaa BopoHKa chjibho pa3pocTaeTca h npHHHMaeTi. Ha CBoeiux AHCTajb- 

 homi, cjifenoM-b kohh.'B bha^ a-uhhhoh Tpy6KH, hjih KaHaja. Bi pesyjibTarfe o6a o6pa30BaHia 



Phc. 38-h. HacTt aKTOAepMbi pereHe- 

 pupyiomaro xo6oia Ptychodera bt» 

 MtcTi o6pa30Baaifl 3KTOAepMa^tHaro 

 KaHa.ia h nopu Hei>pHAifl. p— nopa; 



nf — HepBHOCOJOKHlICTtlH nOAKOX(BbIH 



cjioh. Zeiss Obj. Horn. Imm. 1,5, ocul.4. 



