During which stage of birth does the baby's head flex?

The stage of birth during which the baby's head flexes is flexion. This stage is crucial as it involves the baby's chin moving closer to the chest, which allows for a smaller diameter to navigate through the birth canal more effectively. This flexion position facilitates the alignment of the baby’s head with the axis of the pelvis, helping to ease the passage during delivery. As a result, it plays a significant role in the overall birth process by aiding in both descent and eventual delivery.

During this stage, the flexion of the head is essential to optimize the space for birth, making it a critical aspect that contributes to the progression of labor and delivery.