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: ENT
Quadrilateral cailage is attached to all except 
Select and explain. 
A. Ethmoid, B. Vomer, C. Sphenoid, D. Maxilla
C: Sphenoid
Answer: C: Sphenoid 
Explanation: Ans. C Sphenoid Quadrilateral cailage forms the nasal septum. It is bounded firmly by collagenous fibers to the Nasal bones Ethmoid Vomer Maxilla