The total number of skull bones in adults is 23, mainly divided into the cranial skull and the facial skull. Among them, the cranial skull has 8 bones, and the facial skull has 15 bones. The functions of the skull bones in different locations and the protective effects of the skull in different locations are different.

1. The cranial skull: The cranial skull consists of 8 bones, including 2 symmetrical temporal bones, 2 parietal bones, 1 frontal bone, 1 occipital bone, 1 sphenoid bone, and 1 ethmoid bone. The 8 cranial bones form the cranial cavity, and the 8 brain tissues together form the skull, which can prevent brain tissue damage and stabilize intracranial pressure, avoiding brain tissue damage.

2. The facial skull: The facial skull consists of 15 bones, including the inferior turbinate, maxilla, palatine bone, nasal bone, zygomatic bone, and lacrimal bone. The distribution is asymmetric, mainly including the hyoid bone, mandible, and arytenoid bone. The facial skull, together with the facial bones, constitutes the bony structure of the face, which can support the eyes and the tissues inside the nasal cavity and oral cavity.

Once an adult’s skull is injured, it can affect the appearance and even lead to brain tissue damage. Usually, surgery is required, and after the operation, drugs that nourish the nerves should be used to promote the recovery of brain tissue, such as sodium sialic acid tetrahexosyl ganglioside.