opening of auditory tube is in laryngopharynx.

It is a serousal tube.

Epiglottis is considered as anterior boundary of oropharynx

The lumen of nasopharynx is wider than laryngopharynx.

pharyngeal tonsil is in floor of nasopharynx.

Paranasal sinuses drain into inferior meatus.

Septal cartilage makes posterior part of nasal septum.

Cribriform plate of ethmoid bone makes the roof of nasal cavity.

Goblet cells are found in neuroepithelium part.

Vestibule covers by respiratory epithelium.

is located in the laryngeal inlet.

is located at the level of C6. 

is wider during forced inspiration.

is abducted during swalloing.

is adducted during quiet inspiration.

Thyroid angle in female is 90 degree.

Vestibular fold is located lateral to the vocal ligament.

Arythenoid rests on top of th epiglottis cartilage.

Vestibular ligament produces sounds.

arch of cricoid is located  in posterior aspect of cartilage.