All are Pneumatic bones except:: (A) Sphenoid, (B) Ethmoid, (C) Parietal, (D) Frontal
Answer is C. Ans. C. ParietalPneumatic bones are those bones which contain an air filled cavity within them. In humans, they are seen in relation to the nasal cavity - they enclose the paranasal sinuses. Pneumatic bones are - maxilla, frontal bone, sphenoid and ethmoid