The neural tube begins developing and will become the brain and spinal cord.

The placenta forms and connects the embryo to the mother’s bloodstream.

Major organ systems form and the baby’s structure becomes more defined.

Fingers and toes form and begin to separate from being webbed.

Muscles develop, allowing the fetus to make spontaneous movements for the first time.

The baby’s bones continue to harden and muscles strengthen for coordinated movement.

Fine hair called lanugo begins to cover the baby’s body.

The baby practices swallowing and may suck its thumb.

The baby can hear sounds from outside the womb.

A waxy protective substance forms on the baby’s skin in the amniotic fluid.

Eyelids and eyebrows are fully formed, and the baby’s eyes begin to open.

Lungs continue developing and practice breathing movements occur.

The baby’s position shifts, with the head moving downward toward the pelvis.

Brain development increases and the nervous system becomes more complex.

The baby gains significant weight and builds fat layers under the skin.

Movements may feel stronger but more restricted due to limited space.

The baby’s head becomes engaged in the pelvis in preparation for birth.

The baby’s skull remains flexible to help with the birthing process.

Facial features become more distinct, and the eyes move closer together.

The umbilical cord forms, connecting the baby to the placenta.

Many organs are functioning or close to functioning normally.

The embryo grows rapidly and basic baby features begin to take shape.

The baby prepares for independent life outside the womb as organs mature.

The placenta takes on a crucial role in delivering nutrients and oxygen.

What is the name of the single cell formed when a sperm fertilizes an egg?

Which stage is a solid ball of cells formed after several cell divisions?

The blastocyst implants into which part of the female reproductive system?

Which structure later helps form the placenta?

What is the correct order of early development stages?