What is the baby's head beating?

The baby's head beating part is called the front fontanelle, which is a rhombic gap composed of frontal bone and parietal bone. When born, the front fontanelle is about one cm to two cm, which will slowly shrink and close with the child's development. Under normal circumstances, it will close between one year and two years old. Before closing, because there is no skull cover here, the intracranial vascular pulsation is easy to see, which is a normal phenomenon. Usually pay attention to protect the child's fontanelle, prevent collision, usually pay attention to the child's vitamin D supplement, more sun exposure, contribute to the closure of fontanelle.