system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Embryonic period is upto
assistant
The correct answer is  Embryo refers to the product of conception from the day of feilization to 8 weeks Prenatal period Ovum- 0-2 wks Embryo- 3-8wks Foetus- 9wks - bih Postnatal period Newborn- first 4wks after bih Infant- Bih to 12months Toddler- 1yr to 36 months Preschool child- 37 to 72 months School age child- 73 months to 12yrs Adolescence Early- 10-13 yrs Middle- 14-16 yrs Late- 17-20yrs Ref: Ghai, 9th edition, Chapter 2, Table 2.1