Question 7 of 8
What respiratory system changes occur when someone quits smoking?
A. Cilia always function abnormally.
B. Tar in the air passages dissolves.
C. Cilia regain normal function.
D. Tar continues to form.
What respiratory system changes occur when someone quits smoking?
A. Cilia always function abnormally.
B. Tar in the air passages dissolves.
C. Cilia regain normal function.
D. Tar continues to form.