Histological and histopathological changes in the central nervous systm due to some stress factors

the present investigation was construced to study the :li8to~)Clt:l01oGical and ~listoche’;lical cha.::[~es of sor:e iipor-:~8.Llt s tz-e as f aut o r-s all the brain tissue. stress factors carried out in -iihis work \7E.re, hypoxia, he at,sun Y’8.j, cold, nose and o vo rexe r-t Lon , The an.irn al, of choise in S’~lCl1 expoz-Lucn t 7lo.s a’l.o Lnorets~f diffErell-G SGXES [1:1d 4-6 .non ths of ase, the rats used were divided into six :.;;rOtl:)S ac co r-d i.ng to the stress f actors used •. .En hy pox i c Group t the -:lOst a t z’Lk i.n.; pf.o tuz-c was isc:-aemic neuronal dar1o..--:;e wh i ch was pr-e aen t m ai.n Ly in the lar.:.;epyrallido.l cells of cerebral cortex, pur’Ir i.n j e cells, thala-mus and basal C:aY’J.01ia, O’t he r neuronal da:’’1.80€ WEl”C no t Lc edin the f’o rm of c;ol1st cells, con.l.e t e lysis of the nerve ce-LLs vii th obvious ueur-ono pha.jf a and SO::TIe f’o rna of Early 11.e-Ur02.1al c han.je s , Irhe wal.L of very few small blood vesselsaho wed 2. feJ.tu:ce of fibrinoid sV’!elli::.1G with perivascular.