Trimesters and Development

The heart is the first organ to develop and is responsible for pumping blood and supplying oxygen and nutrients to the developing fetus.

The placenta connects the fetus to the uterine wall, allowing for nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.

The umbilical cord connects the embryo/fetus to the placenta and transports blood, nutrients, and waste between the fetus and the mother.

The eyes open during the 3rd trimester.

The lungs mature during the 3rd trimester, preparing the fetus for breathing air at birth.

The fetus begins to respond to external stimuli during the 3rd trimester.

The 1st trimester is crucial for the formation of major organs and structures, including the heart, brain, and spinal cord.

During birth, the fetus is pushed through the vaginal canal, marking the transition from intrauterine life to independent life.

The amniotic sac is a fluid-filled membrane that surrounds and protects the developing fetus, providing cushioning and maintaining a stable temperature.

Fetal development is typically divided into three trimesters, each characterized by specific growth and developmental milestones.