What is the first stage of childbirth characterized by?

The first stage of childbirth is characterized by the onset of contractions leading to full dilation of the cervix. This stage is crucial because it includes all the processes that prepare the body for the delivery of the baby. During this time, the cervix gradually opens from its closed position to a fully dilated state, typically measuring about 10 centimeters in diameter, allowing the baby to pass through the birth canal.

This initial stage can last several hours, especially for first-time mothers, and is divided into three phases: early labor, active labor, and transition. Each phase signifies different levels of contractions and cervical dilation, culminating in the complete opening of the cervix, which indicates readiness for the subsequent stages of labor, including the delivery of the baby.

The other options refer to later stages or processes in childbirth. Delivery of the baby is part of the second stage, while the delivery of the placenta and the recovery of the mother occur afterwards. Thus, understanding that the first stage is specifically about the progression from the onset of contractions to full cervical dilation is key to grasping the childbirth process.