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Embryology (Fertilisation (Proteins on sperm head bind to egg receptors,…

- - - - Continuous production
      - Capacitation: epithelial interactions, between sperm and mucosal surface of uterine tube
        
        Glycoprotein coat + seminal plasma proteins are removed from plasma membrane that overlies acrosomal region of spermatozoa
  - - - One, large, immotile oocyte + 3 polar bodies
      - Production of entire supply germ cell
- - - - 6 days after fertilisation: hatched blastocyst attaches to endometrial epithelium
      - Trophoblast and endometrial interaction: trophoblast cells start to rapidly proliferate and differentiate into: cytotrophoblast and synctiotrophoblast
        
        Sync: proteolytic enzymes: erode maternal tissue
        
        Embryo burrows into endometrium + derives nourishment from eroded maternal tissue (1ST WEEK)