Human birth science

 Insan ki paidaish (human birth)

 ki science ko embryology kaha jata hai. Yeh ek aisi process hai jo do main stages mein divided hai: fertilization aur development.Fertilization:Yeh process tab start hota hai jab ek male sperm cell aur female egg cell ka milap hota hai.Jab sperm aur egg milte hain, toh fertilized egg (zygote) banta hai. Yeh zygote mein 46 chromosomes hote hain, jo insani genes ko define karte hain.Development:Zygote: Fertilization ke baad, zygote rapidly divide hota hai aur ek ball of cells (blastocyst) banata hai.Implantation: Blastocyst uterus mein attach hota hai aur wahan se growth start hoti hai.Embryonic Stage: Is stage mein cells different organs aur tissues mein develop hoti hain. Yeh stage pehle 8 weeks tak hoti hai.Fetal Stage: 9th week se lekar birth tak fetus ka size aur organs develop hote hain.Yeh process 9 months ka hota hai aur is doraan mother ka body fetus ko nutrition aur protection provide karta hai. Delivery ke waqt, jab baby fully developed hota hai, us waqt natural birth ya c-section ke zariye baby dunya mein aata hai.