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Multiple Choice
Which bone forms part of the floor of the cranium?
A
Parietal bone
B
Nasal bone
C
Sphenoid bone
D
Frontal bone
Verified step by step guidance
1
Begin by understanding the anatomy of the cranium, which is the part of the skull that encloses the brain.
Identify the major bones that form the cranium: frontal, parietal, occipital, temporal, sphenoid, and ethmoid bones.
Focus on the sphenoid bone, which is a complex bone located at the base of the skull, forming part of the floor of the cranium.
Recognize that the sphenoid bone is centrally located and articulates with several other bones, contributing to the cranial floor structure.
Compare the sphenoid bone with other options: the parietal bone forms the sides and roof, the nasal bone is part of the facial skeleton, and the frontal bone forms the forehead and part of the roof of the cranium.