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My personal favorite poorly designed part of the body is the sinus cavity. When we used to walk on four limbs, our heads would naturally incline to an angle th
by a2tech 11y ago
My personal favorite poorly designed part of the body is the sinus cavity.
When we used to walk on four limbs, our heads would naturally incline to an angle that allows full drainage of the sinus cavity. Now that we walk upright, there's a dead spot in the back of the cavity where mucus and bacteria can pool. This is why if you're experiencing sinus pressure but you haven't reached the stage where nothing in your head is moving if you tip your head forward you can often feel an immediate lessening of pressure.
- agumonkey 11y agoAlso, IIRC, sinus covered in soft draining muscles that oscillate or contract at a slow frequency. That's why you often have one side occluded while the other is not, and after a while the opposite. It's just the way the machine ticks, no need to fight it, only patience.
- jane_is_here 11y agoThe muco-ciliary escalator usually takes care of that.
- chuckcode 11y agoAlways wondered why after surfing the water didn't drain out of my sinus until I bent over to pick something up. Thanks for the insight!
- pstevesy 11y agoJust spent an hour researching this...now back to work! Not a fan of the dead spot.