WHAT ARE THE THREE STAGES OF BIRTH?
- The dilation of the cervix (the neck of the uterus)
- The birth of the baby
- The expulsion of the placenta
HORMONES - (progesterone, oestrogen, oxytocin and relaxin)
Towards the end of pregnancy, the concentration of progesterone in the blood falls, leading to the contraction of the myometrium. Oestrogen levels rise.
What is the role of...
- It stimulates uterine contractions;