The respiratory system and the lungs
Keywords
biology,
disease,
inhaling,
anatomy,
lung,
patient,
lung cancer,
emphysema,
asthmatic,
coughing,
symptom,
bronchitis,
cigarette,
nicotine,
pneumonia,
larynx,
artery,
inflammation,
radiation,
serious,
torso,
addict,
cholesterol,
damaged,
chested,
tumour,
bodycare,
cigar,
epidemic,
poisonous,
bronchus