<P> In humans and other land animals the middle ear ( like the ear canal ) is normally filled with air . Unlike the open ear canal , however , the air of the middle ear is not in direct contact with the atmosphere outside the body . The Eustachian tube connects from the chamber of the middle ear to the back of the nasopharynx . </P>
<P> In humans and other land animals the middle ear ( like the ear canal ) is normally filled with air . Unlike the open ear canal , however , the air of the middle ear is not in direct contact with the atmosphere outside the body . The Eustachian tube connects from the chamber of the middle ear to the back of the nasopharynx . </P>
where does the eustachian tube connect to the throat
where does the eustachian tube connect to the throat
the back of the nasopharynx
the back of the nasopharynx