Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
New Topic  
tyressjones tyressjones
wrote...
Posts: 4034
Rep: 6 0
7 years ago
Why do smokers cough?
A) Nicotine irritates the lining of the lung.
B) Smoking damages the cilia that normally remove mucus and debris from the respiratory tract.
C) Smoking affects the respiratory center neurons in the medulla.
D) Carbon monoxide in the smoke triggers the cough reflex.
Textbook 
Biology: Life on Earth

Biology: Life on Earth


Edition: 10th
Authors:
Read 84 times
2 Replies
Replies
Answer verified by a subject expert
skeledentskeledent
wrote...
Top Poster
Posts: 1329
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

tyressjones Author
wrote...
6 years ago
Yes! Correct again Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1382 People Browsing
 104 Signed Up Today
Related Images
  
 1687
  
 258
  
 262
Your Opinion
Do you believe in global warming?
Votes: 370