Doctors use the otoscope to look in the nose; though technically, it is for the ear. But it is a handy device and they use if for ears, nose and throat.
rhinoscope
A medical instrument for looking up the nasal cavity.
Rhinoscopy is visual exam of the nasal passages.
The most common identifier used by the American Medical Association is: Nasal Canula by far the most used. Canula Nasal Passages
Clears the nasal passages, because a sneeze is caused by irritation or itchiness in your nose or nasal passages.
No, as they have no lungs or nasal passages.
nostrils
nasal septum
The abbreviation NG is for nasogastric or nanogram.
deviated septum
No, clams don't have nasal passages or lungs.
the uvula
between the nasal passages and the diaphragm