Related by context. Frequent words. (Click for all words.) 59 sphincter 59 fibrous tissue 59 vasodilation 57 blood vessels 57 clot formation 57 urethra 57 GI tract 56 pericardium 56 upper gastrointestinal tract 56 vasodilator 55 pulmonary arteries 55 bile acids 55 duodenum 55 mucosa 54 esophagus 54 bladder 54 spinal canal 53 bronchial tubes 53 contractility 53 gastrointestinal tract 53 epithelium 53 bronchi 53 resorption 53 digestive tract 52 absorb calcium 52 angiotensin II 52 synovial fluid 52 reflux 52 esophageal 52 hypothalamic 52 stomach acid 52 pulmonary artery 52 Nitric oxide 52 endothelial dysfunction 52 left ventricle 52 malabsorption 52 diaphragm 51 thick mucus 51 Insulin resistance 51 gastric acid 51 digestive enzymes 51 urinary tract 51 conjunctiva 51 bone resorption 51 histamine 51 acetylcholine 51 skeletal muscles 51 Antihistamines 51 connective tissue 51 Ghrelin 51 contractile 51 prostaglandins 51 thyroid hormones 51 outer membrane 50 sebum 50 osteocalcin 50 vagus nerve 50 cerebrospinal fluid 50 urethral 50 upper airway 50 aldosterone 50 platelet aggregation 50 soft palate 50 tumor vasculature 50 capillaries 50 renin angiotensin system 50 oxalate 50 fatty tissue 50 prostacyclin 50 hormone insulin 50 left ventricular hypertrophy 50 autonomic nervous system 50 connective tissues 50 stomach acids 50 dentin 50 atria 50 sebaceous glands 50 artery walls 50 small intestine 50 tubules 50 NMDA receptors 49 perineum 49 myelin sheath 49 absorb nutrients 49 dermis 49 muscle tissue 49 narrowed arteries 49 Aerobic exercise 49 alveoli 49 glutamine 49 intestine 49 pharynx 49 abdominal wall 49 ventricles 48 bile ducts 48 oxygenated blood 48 nasal passages 48 inactivates 48 muscles 48 vesicle 48 calcium ions