Related by context. Frequent words. (Click for all words.) 76 lung 62 intestines 59 blood vessels 58 kidneys 58 internal organs 58 airways 57 esophagus 55 liver 55 intestine 55 aorta 54 nostrils 54 airway 54 digestive tract 54 windpipe 54 bloodstream 53 vital organs 53 diaphragm 53 mucus 53 uterus 52 vocal cords 52 respiratory 52 arteries 52 pancreas 51 tissues 51 abdomen 51 stomach 51 muscles 50 clot 50 inhaled 50 digestive 50 brain 50 spinal cord 49 respiration 49 lung function 49 bladder 49 bowel 49 larynx 48 clots 48 blood clots 48 emphysema 48 circulatory 48 blood clot 48 sinus 47 lung disease 47 gums 47 colon 46 inner ear 46 pulmonary 46 breathing difficulties 46 stomachs 45 breathing 45 oxygen 45 breathe 45 gastrointestinal tract 45 inhale 45 coronary arteries 45 asthmatic 45 intestinal 45 veins 44 thighs 44 throat 44 womb 44 livers 44 spleen 44 artery 44 small intestine 44 Breathing 44 coughing 44 inflammation 43 kidney 43 pores 43 wheezing 43 bacterial infection 43 legs 43 organs 43 ovaries 43 rib cage 43 glands 43 difficulty breathing 43 rectum 43 nasal 43 heart 42 brains 42 pelvis 42 tissue 42 chest 42 cavities 42 bone marrow 42 inhaling 42 tendons 42 marrow 42 aneurysm 41 cervix 41 placenta 41 cyst 41 kidney function 41 breast tissue 41 mitochondria 41 spine 41 nerve cells 41 inhalation