Which of these passageways opens directly into the nasopharynx?
a. auditory tubes
b. external nares
c. nasolacrimal ducts
d. paranasal sinuses
e. all of these
Answer: A
Biology Questions and Answers.
a. auditory tubes
b. external nares
c. nasolacrimal ducts
d. paranasal sinuses
e. all of these
Answer: A