Stages of Development
Month-by-Month
Key Structures
Vocabulary
100

The first stage of prenatal development

What is the zygote?

100

The heart begins to beat around this time

What is Month 2?

100

Provides nutrients and oxygen to the baby

What is the placenta?

100

Development before birth

What is prenatal development?

200

The stage when major organs begin forming

What is the embryo stage?

200

The baby can move and kick  

What is Month 5?

200

Connects the baby to the placenta

What is the umbilical cord?

200

The developing baby after 8 weeks

What is a fetus?

300

The longest stage of development

What is the fetus stage?

300

The baby is fully developed and ready for birth

What is Month 9?

300

Protects the baby and cushions it

What is amniotic fluid?

300

The stage when organs begin forming

What is embryo?

400

The stage where the baby grows and develops features

What is the fetus?

400

The stage when facial features begin forming

What is Month 3?

400

The organ where the baby develops

What is the uterus?


400

Care given to a pregnant woman

What is prenatal care?

500

The three stages of prenatal development

What are zygote, embryo, and fetus?

500

The baby begins gaining weight rapidly

What is Month 7 or 8?

500

Allows waste to pass from baby to mother

What is the placenta?

500

The early stage after fertilization

What is zygote?

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