Question

The human cranium is made up of ______ bones.

Answer 1

Hint: The human cranium is the part that contains the brain and is globular in shape and large in comparison to the face of the body. It is the framework of the head of the vertebrates which is composed of bones and cartilage which protects the brain and some sense organs.

Complete answer:
Human cranium is the bony framework of the skull that helps to protect the brain from any injury or impact. It is composed of 8 bones which are two parietal bones, two temporal bones, frontal bone, occipital bone, sphenoid bone and the ethmoid bone. These 8 bones together form the framework of the human cranium and form a bony case for the protection of the brain.

There are two parietal bones in the skull which are joined together by a fibrous joint from the sides of the roof of the cranium. Its shape is roughly quadrilateral and has two surfaces, four borders and four angles. The two temporal bones are situated at the sides and the base of the skull which helps in providing support. It is laterally attached to temporal lobes of the cerebral cortex. Frontal bones as the name suggest are in the front making part of the forehead and are in squamous shape. The occipital is a trapezoid shaped bone present at the lower-back area of the cranium. Sphenoidal bone is bone of the neurocranium and is situated in the middle of the skull towards the front. Ethmoid bone separates the nasal cavity from the brain and located at the roof of the nose between two orbits.

Note: All 8 bones which form a framework of the head are located in the different parts of the head and perform their specific functions. All these bones provide support and protection to the brain of the body.