What structures are considered part of the upper respiratory tract?

Answer 1

The parts of Upper Respiratory are:

nasal cavity (either of the two cavities lying between the floor of the cranium and the roof of the mouth and extending from the face to the pharynx)

larynx (a cartilaginous structure at the top of the trachea; contains elastic vocal cords that are the source of the vocal tone in speech)

trachea (membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi)

pharynx (the passage to the stomach and lungs; in the front part of the neck below the chin and above the collarbone)

olfactory organ (the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals)

Answer 2

Nose, pharynx & larynx.