Months 1-2
Months 3-4
Month 5-6
Month 7-8
Month 9 & Labor
200

The term for the developing baby during the first 8 weeks of pregnancy.

What is an embryo?

200

This reflex, involving the mouth, starts forming in month four.

What is the sucking reflex?

200

This fine, downy hair begins to cover the fetus in month five.

What is lanugo?

200

By the seventh month, the fetus measures around this many inches in length.

What is 15 to 17 inches?

200

By the end of 37 weeks, the baby is considered this.

What is full term?

300

This structure begins forming in the first month to nourish and protect the embryo. 

What is the placenta?

300

By the end of the third month, the fetus is about this long.

What is 3 inches?

300

By the end of the sixth month, the fetus typically weighs about this much.

What is 1½ pounds?

300

The fetus develops this ability related to its eyelids and light awareness.

What is opening and closing the eyes and sensing light?

300

Most babies assume this position in the womb before delivery.

What is head-down?

400

This vital organ starts to beat during the second month.

What is the heart?

400

These two systems begin working together, allowing the fetus to form a fist.

What are the nerves and muscles?

400

These begin to develop on the tongue, helping with future feeding.

What are taste buds?

400

During the eighth month, this substance begins to build up under the baby’s skin.

What is body fat?

400

At birth, the average full-term baby is about this long.

What is 19 to 21 inches?

600

These tiny buds begin forming and will eventually become the arms and legs.

What are limb buds?

600

This substance begins forming in the baby's intestines and will become their first bowel movement.

What is meconium?

600

These two reflexes appear in the sixth month, showing brain development.

 What are the hand and startle reflexes?

600

By the end of the eighth month, the baby’s brain continues developing and increases its ability to do this.

What is regulate body temperature?

600

A full-term baby typically weighs within this range.

What is 6 pounds 2 ounces to 9 pounds 2 ounces?

800

At the end of the first month, the embryo is approximately this long.

What is one-twenty-fifth of an inch?

800

During the fourth month, this part of the fetus becomes clearly defined, making gender visible on an ultrasound.

What are the genitals?

800

This creamy protective coating appears on the baby’s skin during month five.

What is vernix?

800

As the baby prepares for birth, this soft spot on the skull remains open to allow passage through the birth canal.

What is the fontanelle?

800

When this milestone is reached, the baby’s organs are ready to function independently.

What is full-term development by 37 weeks?

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