De geboorte

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

De geboorte

At the end of this class...

- Can you describe how a birth proceeds?

Recap

3 phases

Birth consists of 3 phases:

- dilation

- delivery

- afterbirth

Dilation 

• During the contractions, the cervix (mouth of the uterus) becomes wider

• The amniotic sac generally ruptures 

Delivery

• When the cervix is ​​open wide enough

• Contractions push the baby out

Afterbirth

The contraction pushes out the placenta, amniotic membranes and the rest of the umbilical cord

umbilical cord

HOERA! 

The baby was born!

Liggingsafwijkingen

Homework

Make: 1, 2, 3, 4 en 5 (p. 80 to 82)

Twins

Identical twins

Fraternal twins