What are the projections in the nasal cavity that increase the surface area are called?

A) Meatus
B) Septum
C) Turbinates
D) Kiesselbach plexus

The projections in the nasal cavity that increases the surface area are called turbinates. The lateral walls of each nasal cavity contain three parallel bony projections: the superior, middle, and inferior turbinates. These increase the surface area, making more blood vessels and mucous membrane available to warm, humidify, and filter the inhaled air. A meatus is the passageway or canal underlying each turbinate that collects drainage. The septum is what divides the nasal cavity into two slitlike air passages. The Kiesselbach plexus is a rich vascular network in the anterior part of the septum.