Related by context. Frequent words. (Click for all words.) 71 small intestine 68 intestines 67 intestine 64 digestive tract 64 colon 62 bladder 62 bowel 60 aorta 60 rectum 60 blood vessels 59 optic nerve 58 anus 58 gastrointestinal tract 57 uterus 57 gallbladder 57 lungs 56 windpipe 56 intestinal 56 pancreas 55 lung 55 liver 54 reflux 54 internal organs 53 sinuses 52 gastric 52 coronary artery 52 cervix 52 acid reflux 51 artery 51 clot 51 stomach 51 bloodstream 51 cornea 51 diaphragm 50 arteries 50 larynx 50 aneurysm 50 throat 50 retina 50 abdomen 50 blood clot 49 tumor 49 spinal cord 49 tumors 48 prostate 48 digestive 48 gland 48 GERD 48 cell membrane 48 coronary arteries 48 ovary 47 airway 47 clots 47 tonsils 47 scar tissue 47 cyst 47 incision 46 brain 46 cavities 46 nostril 46 carotid artery 46 gall bladder 46 blood clots 46 kidneys 46 abdominal 45 vocal cords 45 vaginal 45 gums 45 vagina 45 cavity 45 breast tissue 45 esophageal cancer 45 lesion 45 cysts 45 lymph nodes 44 pancreatic 44 inflammation 44 muscle tissue 44 blockage 44 cancerous 44 vital organs 44 polyps 44 incisions 44 placenta 44 nostrils 44 ulcer 43 lesions 43 tissues 43 sinus 43 ovaries 43 internal bleeding 43 catheter 43 gastrointestinal 43 cataracts 43 mucus 42 spleen 42 pelvis 42 bacterial infection 42 membranes 42 jaw 42 soft tissue