Author Question: Into what structure do the eustachian tubes drain? a. Larynx b. Nasopharynx c. Oropharynx d. ... (Read 40 times)

Beheh · **on:** Jul 16, 2018

Into what structure do the eustachian tubes drain?

a. Larynx
b. Nasopharynx
c. Oropharynx
d. Vestibule

Question 2

The upper respiratory tract traditionally ends at what point?

a. Branching of the trachea into right and left main stem bronchi
b. Hypopharynx
c. Inferior border of the larynx
d. The end of the conducting airways

diana chang · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
In the lateral nasopharynx, there are two openings into the left and right eustachian tubes that link the upper airway with the middle ear (Figure 9-36). The eustachian tubes drain fluid out of the middle ear and allow gas to move in or out of the middle to equalize pressure on either side of the tympanic membrane.

Answer to Question 2

ANS: C
The upper respiratory tract is defined as those airways starting at the nose and mouth and that extend down to the trachea (Figure 9-36).