
Image Result For Nose Definition Respiratory System
The nose. The nose is the only part of the respiratory system that is visible externally and is the route for air entry into the respiratory system. Just below the surface of the epithelium is a rich network of blood vessels that warm the nasal cavities..The nose is the body s primary organ of smell and also functions as part of the body s respiratory system. As it passes over the specialized cells of the olfactory system, the brain recognizes and identifies smells. As air moves through the nasal passages, it is warmed and .