Question

In human beings, the cranium is formed by
A) Eight bones of which two are paired
B) Ten bones in which two are paired
C) Twelve bones of which two are paired
D) Fourteen bones of which six are paired

Answer 1

Hint: The internal framework of the human body that comprises a cluster of bones is known as the human skeleton. It is divided into two parts- the axial skeleton that is formed by the rib cage, skull, and other associated bones, and the appendicular skeleton which is formed by shoulder girdle, pelvic girdle, and the bones that make limbs.

Complete answer:
The human skull is part of the axial skeleton of the human skeleton. It is the bone structure that forms the head of the human body. It is composed of two parts- cranium and mandible.
Cranium is further divided into two-part- neurocranium and viscerocranium with mandible as its largest bone. Viscerocranium is the facial skeleton of the skull that has several sensory organs such as a pair of eyes, nose, ears, and mouth. The skull is a product of cephalization and it forms the anterior portion of the skeleton. All of the bones in the skull are joined by immovable joints formed by bone remodeling and Sharpey’s fibers providing a little flexibility. The human skull consists of twenty-two bones of which eight are cranial bones and fourteen are facial skeleton bones. The eight bones of the cranium are one occipital bone, two temporal bones, two parietal bones, one sphenoid bone, one ethmoid, and one frontal bone.

Hence, the correct option is A.

Note:
The primary function of the human skull includes the protection of the brain. It enables stereoscopic vision by fixing the position of the eyes. Skull also enables sound localization by fixing the position of the ears. Some animals have horns in their skulls that act as a defense mechanism by providing a mount.