Related by context. Frequent words. (Click for all words.) 65 airway 63 bronchial tubes 63 bronchi 57 soft palate 56 blood vessels 55 nasal passages 55 pulmonary arteries 54 adenoids 54 pharynx 54 airways 54 GI tract 54 airway inflammation 53 clot formation 53 vasodilation 53 airway obstruction 52 narrowed arteries 52 carotid arteries 52 nasal passage 51 ureter 51 coronary artery 51 urethra 51 myocardial ischemia 50 esophagus 50 capillaries 50 alveoli 50 spinal canal 50 bronchospasm 50 trachea 50 bile ducts 49 left ventricle 49 uterine 49 genital tract 49 air sacs 49 sphincter 49 lungs 49 obstructive sleep apnea 48 bladder 48 atherosclerotic plaques 48 mucosa 48 hemodynamics 48 duodenum 48 artery 48 arteries 48 respiratory distress syndrome 48 respiratory tract 48 tumor vasculature 48 bile duct 47 lung tissue 47 lung function 47 pulmonary artery 47 esophageal 47 impaction 47 hypertrophy 47 thick mucus 47 coronary arteries 47 ear canal 47 carotid 47 resorption 47 reproductive tract 47 rumen 47 ascending aorta 47 Sleep apnea 47 clot 47 nasal cavity 47 larynx 47 biliary 47 exhalation 46 atherosclerotic plaque 46 bruxism 46 autonomic nervous system 46 pleural 46 sinus cavity 46 mucous membrane 46 tachycardia 46 snoring 46 intra abdominal 46 lung 46 diaphragm 46 post operatively 46 cerebrospinal fluid 46 soft tissues 46 sinuses 46 bowel 46 aorta 46 contractility 46 involuntary movements 46 Arteries 46 structural abnormalities 46 tracheal 46 prostacyclin 45 skeletal muscles 45 systemic inflammation 45 intestinal tract 45 lymphatic vessels 45 neural tube 45 sweat glands 45 neuroendocrine 45 bronchial 45 epithelium 45 alveolar 45 blocked arteries