because they have little hair in the nose.
the tiny hairs are called CILIA
Cilia
They avoid dust entering the nostrils.
Cilia in the nostrils help to trap and filter out particles like dust, pollen, and bacteria from entering the respiratory system. They also help to sweep mucus and trapped particles towards the throat where they can be expelled or swallowed.
4 all together... 2 internal nostrils and 2 external nostrils
Human nostrils serve as the primary entry points for air into the respiratory system. When we inhale, air flows through the nostrils, where it is filtered by tiny hairs (cilia) and mucus that trap dust, allergens, and pathogens. The air is then warmed and humidified before passing into the nasal cavity, which contains olfactory receptors that detect odor molecules, allowing us to smell. Additionally, the nostrils can vary in size and shape, which can influence airflow and the efficiency of breathing.
No. The tiny hairs (cilia) in your nostrils collect input as well as output.
cilia "beat" in a rythmatic motion to force mucus and substances away from the lungs.
They are the cells that the hairs in your nostrils connect too. They are the cells that let the hair grow and move which is important because they help filter particles that enter the nasal cavity.
Traps microbes and sends them out of the body
i donno
because the cilia helps clump demise together