Related by context. Frequent words. (Click for all words.) 64 spinal canal 62 nerve endings 62 spinal chord 61 sensory nerves 61 spinal cord 61 optic nerve 60 nerve fibers 58 optic nerves 58 urethra 57 spinal discs 57 sciatic nerve 57 vagus nerve 56 collagen fibers 56 pericardium 56 peripheral nerves 56 trigeminal nerve 56 tendons 55 spine 55 intestinal lining 54 herniated 54 blood vessels 54 inflamed tissue 53 abdominal organs 53 spinal column 53 abdominal wall 53 auditory nerve 53 sebaceous glands 53 nerve cells 53 axons 53 oligodendrocytes 53 perineum 53 sinus cavity 52 ulnar nerve 52 nerve impulses 52 dendritic spines 52 vasoconstriction 52 soft tissues 52 skeletal muscles 52 pubic bone 52 muscle tissue 51 capillaries 51 cerebellum 51 fibrous tissue 51 arthritic joints 51 muscle contractions 51 dentin 51 pulmonary arteries 51 hair follicles 51 connective tissue 50 vertebrae 50 Schwann cells 50 adrenal glands 50 bulging discs 50 diaphragm 50 dermis 50 acupuncture needles 50 muscle fibers 50 internal organs 50 narrowed arteries 50 vasodilation 50 soft palate 49 facial muscles 49 pinched nerves 49 electrical impulses 49 articular cartilage 49 mucosa 49 GI tract 49 cervical vertebrae 49 vestibular 49 sacrum 49 jaw muscles 49 fallopian tube 49 synovial fluid 49 myelin sheath 49 axon 49 brainstem 48 duodenum 48 nerve regeneration 48 retinal cells 48 electrodes 48 ventricles 48 epithelium 48 tiny incisions 48 myocardium 48 glands 48 cochlear 48 thalamus 48 bronchial tubes 48 ulcerations 48 anterior 48 vertebral body 48 ligaments 48 peripheral nerve 48 tubules 48 pelvic bones 48 scapula 48 salivary glands 48 bladder 48 intracranial pressure 48 corpus callosum 48 tendon