Q1. Explain the periods of prenatal development. Discuss the environmental influences during prenatal development.
- Prenatal development occurs in three periods: germinal (conception-2 weeks), embryonic (2-8 weeks), and fetal (8 weeks-birth).
- Germinal period involves cell division (zygote to blastocyst) and crucial implantation in the uterine wall.
- Embryonic period is marked by organogenesis, forming all major organs and body systems; highly vulnerable to damage.
- Fetal period focuses on rapid growth, maturation of organs, and functional development of systems.
Answer: Prenatal development is the intricate process of growth and differentiation from conception until birth, a period marked by rapid biological changes. This journey is broadly divided into three distinct periods, each characterized by unique developmental milestones. Understanding these stages, alongside the myriad environmental influences, is crucial for appreciating the complexity of human development. ### Periods of Prenatal Development The entire prenatal period, typically lasting 38 to 40 w...