nostrils

The term 'fosas nasales' refers to the two external openings of the nasal cavity in humans and many animals, commonly known as nostrils. These openings play a crucial role in respiration as they allow air to enter the nasal passages, where it is filtered, warmed, and humidified before reaching the lungs. Additionally, the nostrils are equipped with sensory receptors that contribute to the sense of smell. The proper functioning of the 'fosas nasales' is essential for breathing normally and for the ability to detect odors.