Which cranial bone is made of two masses connected horizontally by thin plates?Multiple choice question.vomerethmoid bonefrontal bonesphenoid bone
Question
Which cranial bone is made of two masses connected horizontally by thin plates?
- vomer
- ethmoid bone
- frontal bones
- sphenoid bone
Solution
The cranial bone that is made of two masses connected horizontally by thin plates is the ethmoid bone.
Explanation
- The ethmoid bone consists of a vertical "perpendicular plate" and two horizontal "cribriform plates" that create two horizontal masses.
- The vomer is a single bone that forms part of the nasal septum.
- The frontal bones are primarily a single bone forming the forehead.
- The sphenoid bone has a complex shape but does not conform to the specific description provided.
Final Answer
The correct answer is ethmoid bone.
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