Final answer:
As the fetal head appears, also known as crowning, it is important to support the perineum and ensure controlled childbirth to prevent tears. The umbilical cord should also be checked and managed appropriately.
Step-by-step explanation:
The original question does not pertain to the typical content of fetal development; however, based on the context provided and common knowledge of childbirth and health, it seems to be related to the delivery phase when a baby's head is being born, known as crowning. When the head appears during delivery, careful management is required to ensure the safety of both the mother and the baby. It is crucial to regulate the delivery of the head by supporting the perineum and using controlled pushing to prevent perineal tears. Once the head is out, it is essential to check that the umbilical cord is not wrapped around the baby's neck, and if it is, to gently loop it over the head or perform an emergency clamping and cutting. The healthcare provider should then guide the baby out gently to avoid injury.