Answer :

Final answer:

The first stage of labour begins with regular contractions and involves the cervix thinning and dilating to about 10 cm, ending when the cervix is completely dilated.

Explanation:

The first stage of labour commences with the onset of regular uterine contractions and involves the cervix thinning and dilating. The degree of dilation necessary for this stage is to approximately 10 cm.

This stage ends when the cervix is completely dilated, signalling the beginning of the second stage of labour, wherein the baby is expelled. You can think of the first stage as the opening act that prepares the body for the delivery of the baby. The duration of this stage varies widely amongst individuals, but it is typically the longest stage of labour and can last anywhere between 6-12 hours, or even longer for some.

Learn more about First stage of labour here:

https://brainly.com/question/37215944

#SPJ11

Thanks for taking the time to read When does the first stage of labor begin What does it entail When does it end. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada