Title: Human Fertilization and Embryogenesis - Online Biology Notes
Headings: Human Fertilization and Embryogenesis
Human Fertilization and Embryogenesis
Human Fertilization and Embryogenesis
Fertilization
Embryogenesis
Summary of embryonic and fetal development
Human Fertilization and Embryogenesis

Content: heart, blood vessel, blood, gut start forming, umbilical cord develop, embryo 5mm size
Week5: brain developing, limb buds, heart beats starts (seen on USG), embryo 8 mm long
Week 6: eyes and ear form, embryo known as f etus
Week 7: internal organs, face form, limbs, mouth and tongue, fetus 17mm size. By Week 12: fetus fully form, sex organ develop, fetus starts moving, 56mm long,
By week 20: Hair and nails begins to grow, fingerprint develop, firm hand grip, movement of fetus can be felt, 160m long,
By Week 24: eyelid opens, legal limit for abortion,
By week 26: good chance of survival if prematurely born
By week 28: respond to touch and sound, swallowing amniotic fluid, urinating
By week 30: