DAVRAHOI SINNU SOLI KuDAKON

DAVRAHOI SINNU SOLI KuDAKON, davrahoi sabzishu inkishofi haml va kudak buda, dar rafti onho uzvu sistemahoi organizm tadrijan tashakkul yofta, ba organizmi bolig mubaddal meshavand. Inkishofi organizmi kudak az du davrai asosi iborat ast: batni va khorijibatni. Davrai batni muddatest az lahzai bordor shudan to tavalludi kudak; davomoti on 9 moh (40 hafta) ast. On ba zinai inkishofi janini (to mohi 3 – yumi homilagi) va zinai inkishofi mashimavi (az mohi 3-yum to 9-umi homilagi) judo meshavad. Marhalai khorijibatni, ki az lahzai tavalludi kudak ogoz meyobad, ba 6 davra judo meshavad. Ba har kadomi in davraho darajai muvofiqi inkishofi organizmi kudak, sina makonidan, gizo dodan va nigohubin khos ast: 1) davrai navzodi – az lahzai tavallud to aftidani baqiyai nof va shifoi zakhmi on, 3 – 4 hafta davom mekunad (nig. Kudaki shirmak); 2) davrai sinamaki – az haftai 4-um to 1-solagi; 3) davrai pesh az tomaktabi – az 1 to 3-solagi (nig. Sinni yasli); 4) davrai tomaktabi – az 3 to 7-solagi (nig. Sinni tomaktabi); 5) sinni khurdi maktabi – az 7 to 12-solagi (nig. Sinni maktabi); 6) sinni kaloni maktabi yo sinni navrasi, davrai balogati jinsi – az 12 to 18-solagi.
Bo mururi zamon tanosubi tani kudak digargun meshavad. Qismhoi judogonai organizmi u yak khel taraqqi namekunand, binobar in tanosubi bayni uzvho tagyir meyobad. Mas., dar tamomi muddati inkishof darozii poy taqriban 5 marotiba, darozii dast 4 marotiba, tan 3 marotiba, balandii sar boshad, faqat 2 marotiba ziyod meshavad.
Har davra khususiyati muayyani anatomiyu fiziologi (baroi hamon sinnu sol muvofiq) va mutobiqat ba sharoiti muhiti zistro dorad. Donistani in khususiyatho baroi nigohubin, gizo dodan va tarbiyai kudak lozim meboshad.