Paranasal Sinuses - 2 Questions

[DrTacoElf]

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[bigtooth]

As far as i know the sphenodial air sinuses are paired- with a left and right side. They lie in the body of the sphenoid bone and separated by a septum. They are unequal in size though.
I think the answer could be ethmoidal sinuses. they are not paired sinuses but group of sinuses...(anterior, middle and posterior groups)
correct me if i'm wrong..

 

[AbstractDentist]

Sphenoidal sinus is unpaired

 

[tinman831]

Sphenoidal sinus is unpaired

👍

 

[yetident]

Hi then what about the frontal sinus?????????

 

[lionelhutz]

The maxillary sinus is the largest sinus.
Also, the sphenoidal sinuses are paired. They are rarely ever the same size and it may appear that it is unpaired.
I just checked the latest edition of gray's anatomy and it said the same thing. Check Chapter 32 of the 39th edition. The big blue one. 🙂

 

[DrTacoElf]

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[lionelhutz]

Yup, they're not paired because theres like a million of them. Actually, they range anywhere from 3 to 18. 😀