What is the medical term for the nostrils?

The term "nares" refers to the external openings of the nose, commonly known as nostrils. In anatomical terms, "nares" is the plural form of "naris." These structures are important for respiratory function, as they serve as the entry point for air to flow into the nasal passages. Each naris is lined with mucous membranes that help humidify and filter incoming air.

The other terms presented do not refer to the nostrils. For example, "oropharynx" describes a part of the throat behind the mouth, while "naris" is simply the singular form of "nares." "Septum" refers to the cartilage and bone that divides the nasal cavity into two nostrils, but it does not describe the nostrils themselves. Thus, "nares" is the accurate term that specifically denotes the nostrils as their anatomical definition.