The nasal region refers to the area of the face that includes the nose and surrounding structures. It plays a crucial role in breathing, as it filters, warms, and humidifies the air we inhale. The nasal cavity, located behind the nose, is lined with mucous membranes that help trap dust and pathogens. Additionally, the nasal region is important for the sense of smell, which is facilitated by the olfactory receptors located in the upper part of the nasal cavity. This area also connects to the sinuses, which are air-filled spaces that help reduce the weight of the skull and enhance voice resonance.