The ethmoid bone has four main parts ... you will also find the superior and middle nasal conchae, also known as turbinates. The conchae help to increase the surface area of your nasal passages ...

porous nasal bones called maxilloturbinates or nasal concha, which are covered by a layer of tissue. “They take the form of scrolls, or a branching form a little bit like a tree,” says Matthew ...