HUMAN SKULL Meaning and
Definition
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The human skull refers to the bony structure that encases and protects the brain, as well as other major sensory organs of the head. It is a complex arrangement of bones that forms the framework of the head and face in humans. Composed of 22 bones, the skull can be divided into two main sections: the neurocranium and the viscerocranium.
The neurocranium comprises the bones that surround and protect the brain. This includes the frontal bone which forms the forehead, the parietal bones that make up the sides and roof of the cranial cavity, the temporal bones that house the ears and articulate with the lower jaw, the occipital bone at the back of the skull, and the sphenoid and ethmoid bones which are fundamental structures on the inside.
The viscerocranium constitutes the facial skeleton and supports the facial structures. It encompasses the maxilla, or upper jaw bone, the mandible, or lower jaw bone, the zygomatic bones that form the cheekbones, the nasal bones, the lacrimal bones that house the tear ducts, the palatine bones, and others that contribute to the structure and function of the face.
The human skull is not only essential for protection but also plays a significant role in providing attachment sites for muscles involved in chewing, speech, and facial expressions. Additionally, it contributes to the distinctive appearance and individual characteristics of each person.
Etymology of HUMAN SKULL
The word "human" originates from the Latin word "humanus", which is derived from "homō", meaning "man, human being". The term "skull" comes from the Old English word "skulle" or "sculle", which can be traced back to the Old Norse word "skalli", meaning "bald head" or "skull".
