What benefits do they bring? Couldn’t we just have a straight airway leading to lungs without all the nooks and crannies?
In: Biology
So, here is the tricky thing….whatever sinuses evolved for, it happened waaaaaay before we were human. Our current arrangement is basically what we ended up with after we evolved our weird, very flat faces. So, what they do *now* may not be what they evolved for originally.
Interestingly, our frontal sinuses don’t develop until about the age of 5 or 6. So, we don’t *need* them until then. If at all. They could be relics.
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