The nose is also the main gate to the respiratory system - this means that it's the most important player in letting you breathe. The nose is one talented dude. So let's nose around and find out why. From the outside, the nose looks like one big part. But on the inside, the nose has two long holes called nostrils .
Cartilage is a flexible material that can be moved around easily.
That's because there are no hard bones in the way - just cartilage. Behind the part of your nose that sticks out from your face is a hole called the nasal cavity , which is set back into your skull. The air then passes through your mouth and throat and soon ends up in the lungs. When your lungs are ready to exhale the old air, the nose is the main way for the air to leave your body. The nose knows how to filter things out of the air before they make their way into your throat.