Question

Which of the following is not the bone of cranium?

• A. Occipital bone
• B. Zygomatic bone
• C. Ethmoid bone
• D. Sphenoid bone

Answer 1

The correct option is B Zygomatic bone

Human skull consists of a total of 22 bones, consisting of two sets of bone - mainly cranial (the upper and back of the skull) and facial bone (from the top of the head downwards).
The skull consists of 2 sets of bones namely cranial (8) and facial (14), which are 22 bones in all. The cranial bones contain one ethmoid bone, one frontal bone, one occipital bone, two parietal bones, one sphenoid bone, and two temporal bones.

Zygomatic bone is the cheek bone which articulates with maxilla, temporal bone, sphenoid bone and the frontal bone. So, the bone which is not a part of cranium is zygomatic bone.