This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Middle turbinate is a ? 
Select and explain. 
A. Separate bone, B. Pa of ethmoid, C. Pa of sphenoid, D. Pa of zygomatic
B: Pa of ethmoid
Answer: B: Pa of ethmoid 
Explanation: There are three turbinates in the lateral wall of nose : superior, middle and inferior.The inferior turbinate is a separate bone, while rest of the turbinates are a pa of ethmoidal bone.Below and lateral to each turbinate is the corresponding meatus.Inferior turbinate is longest one.