Multiple Choice
The ciliary escalator allows unwanted particles to be swept __________.
A) downward into the lungs
B) into the bloodstream
C) away when the smoker exhales
D) upward to the throat,where they are usually swallowed
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q61: Nicotine is odorless and colorless.
Q62: In the early 1900s,cigarette smoking was viewed
Q63: Half of all smokers eventually manage long-term
Q64: The wrapping of cigars is the
Q65: Cardiovascular disease in smokers is primarily due
Q67: The chances of a heart attack decrease
Q68: The smoke that a smoker primarily inhales
Q69: Among the gases of tobacco smoke,the most
Q70: Leukoplakia refers to red spots that result
Q71: A component in tobacco smoke that is