making it harder to flow out of the sinuses When the tiny openings that drain the sinuses get blocked, mucus gets trapped in them. This makes a good home for bacteria, viruses, or fungi to grow. If a ...

Like the inside of your nose, the sinuses are lined with a thin layer of tissue called the mucous membrane that makes mucus (snot). When you have a cold or allergies, the tiny holes that drain the ...

The team believes that the larger, more complex snout sinuses of metriorhynchids may have helped to drain their salt glands, ...

When sinuses become blocked and filled with mucus, they cannot drain properly and become a breeding ground for bacteria. This can lead to symptoms like nasal congestion or discharge, post-nasal ...