Related by context. Frequent words. (Click for all words.) 80 intestine 76 intestines 71 esophagus 70 gastrointestinal tract 68 digestive tract 66 pancreas 64 colon 63 blood vessels 62 bowel 61 aorta 60 uterus 58 intestinal 56 spinal column 56 optic nerve 55 liver 55 spinal cord 55 coronary artery 55 bloodstream 55 thyroid gland 54 rectum 54 cell membrane 54 urinary tract 53 artery 53 internal organs 52 gallbladder 52 retina 52 cornea 52 coronary arteries 51 gastric 51 arteries 51 muscle tissue 51 abdomen 51 windpipe 50 tumor 50 digestive 50 incision 49 placenta 49 bladder 49 nerve fibers 49 tissues 49 gland 49 lymph nodes 49 clot 49 tissue 49 anus 49 kidneys 49 lung tissue 48 endothelial cells 48 respiratory tract 48 scar tissue 48 diaphragm 48 carotid artery 48 ovary 47 vital organs 47 tumors 47 cancerous cells 47 cervix 47 soft tissue 47 nerve cells 47 abdominal 47 breast tissue 46 brain 46 blood clot 46 connective tissue 45 tendons 45 spleen 45 stomach 45 lung 45 cartilage 45 cell membranes 45 pancreatic 45 tendon 45 lesion 45 inflammation 45 tumor cells 44 airway 44 incisions 44 lungs 44 gall bladder 44 meniscus 44 tibia 44 belly button 44 circulatory 44 prostate 44 ligaments 43 kidney 43 ovaries 43 aneurysm 43 larynx 43 bacterial infection 43 catheter 43 anterior 43 membrane 42 cancerous 42 membranes 42 reflux 42 cancerous tumor 42 sinuses 42 vaginal 42 collagen 42 cyst