Prenatal Development

Prenatal development is the process in which a baby develops, from conception to birth. It is an intricate and complex process that involves many changes in the baby's body and environment. During the embryonic and fetal stages, the baby's organs, tissues, and systems develop and mature. In the first trimester, the baby's major organs and systems begin to form. This includes the development of the brain, heart, and lungs. The baby's heart begins to beat around the fifth week and the baby's facial features begin to take shape. The placenta and umbilical cord also form during this time, providing nutrients and oxygen to the baby. The second trimester is when the baby grows rapidly and begins to move. The baby's movements can be felt by the mother, usually around the fourth or fifth month. The baby's skin begins to form and its sex can be determined. The baby's lungs begin to develop and the baby's organs become more mature. In the third trimester, the baby continues to grow and mature. The baby's bones harden, and its muscles become stronger. The baby's organs are nearly fully developed and its body systems are able to function. As the baby continues to grow, it begins to move into a head-down position, ready for delivery. At full term, the baby is ready to be born. During this final stage of development, the baby's brain is fully developed, its organs are mature, and its body is prepared for life outside the womb.