This child likely has a meningomyelocele (neural tube defect caused by failure of the neuropores to fuse in week 4, FA2020 p491). Neural tube development in general occurs weeks 3-8 (FA2020 p612) which corresponds most closely to days 15-40. Organogenesis and most vital development also occurs during this period.
Days 1-10 are typically "all or nothing" in that a defect would cause fetal demise.
Days 60-75 (~weeks 8-10) are associated with external genital development, palate and teeth.
The most critical periods are typically over by week 10 (see this chart)
submitted by โcassdawg(1780)
This child likely has a meningomyelocele (neural tube defect caused by failure of the neuropores to fuse in week 4, FA2020 p491). Neural tube development in general occurs weeks 3-8 (FA2020 p612) which corresponds most closely to days 15-40. Organogenesis and most vital development also occurs during this period.
Days 1-10 are typically "all or nothing" in that a defect would cause fetal demise.
Days 60-75 (~weeks 8-10) are associated with external genital development, palate and teeth.
The most critical periods are typically over by week 10 (see this chart)