This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Uncinate process is a pa of which bone 
Select and explain. 
A. Nasal, B. Ethmoid, C. Maxilla, D. Frontal
B: Ethmoid
Answer: B: Ethmoid 
Explanation: In the ethmoid bone, a curved lamina, the uncinate process, projects downward and backward from this pa of the labyrinth; it forms a small pa of the medial wall of the maxillary sinus, and aiculates with the ethmoidal process of the inferior nasal concha. Ref - medscape.com