Human Embryonic and Fetal Development

📋 Course Outline

1. Embryonic Stage
2. Fetal Stage
3. Fertilization and Zygote
4. Cell Division and Blastocyst
5. Organ Development
6. Placenta and Umbilical Cord
7. Fetal Growth and Maturation
8. Sensory Development

📖 1. Embryonic Stage

🔑 Key Concepts & Definitions

• Formation of the zygote: The initial cell resulting from fertilization, when the sperm and egg unite, forming a single-celled organism (see section 3).
• Initial development of the zygote: The early stages following fertilization, where the zygote begins to undergo cellular processes leading to embryo formation (see section 3).
• Rapid cell division forming blastocyst: The process of mitotic divisions that produce a multicellular structure called the blastocyst, which is essential for implantation (see section 4).
• Implantation in the uterus: The embedding of the blastocyst into the uterine lining, enabling nutrient exchange and continued development (see section 4).
• Development of main organs (heart, brain): During the embryonic period, crucial organogenesis occurs, forming the primary structures of vital organs such as the heart and brain (see section 5).
• Formation of placenta and umbilical cord: The development of structures that support fetal nourishment and waste removal, including the placenta and umbilical cord (see section 6).

📝 Essential Points