The openings through which air can enter and leave the nasal cavity are called the external nares or .

The openings through which air can enter and leave the nasal cavity are called the external nares or nostrils.

The external nares are the visible openings located on the surface of the nose, which serve as the primary entry and exit points for air during the process of respiration. They are surrounded by cartilage and are lined with skin and mucous membranes, which help to filter, warm, and moisten the air before it passes further into the respiratory system.

The importance of the external nares extends beyond simple airflow; they also play a role in the sense of smell, as olfactory receptors located in the nasal cavity can detect various odors. Any obstruction or alteration in the nares, due to conditions such as congestion or structural issues, can significantly impact both breathing and the sense of smell.