Heat from the blood vessels in the nasal cavity warms the air as you breathe. Special cells in the nasal cavity wall add moisture to the air you breathe. Because of these blood vessels and special cells, air you inhale is warmed and moistened before it reaches your lungs. There are many tiny hairs inside your nose that trap small specks of dirt. This cleans the air you breathe.
Special cells line the inside of the nose.
They protect you by warning you if something harmful is in the air, something like smoke or spoiled food. Nerve cells in your nose make you sneeze in a dust-filled room thereby keeping dust from getting deeper inside your body. This Classroom Connector addresses Instructional Objective 1.05. You taste with your tongue. Your tongue has special taste buds that can register sweet, sour, salty, and bitter.