Related by context. Frequent words. (Click for all words.) 72 muscle tissue 67 muscles 64 skeletal muscle 63 tendons 60 blood vessels 60 calf muscles 59 nerve cells 59 collagen 57 nerve fibers 57 hair follicles 56 motor neurons 56 muscle 56 fibroblasts 56 ventricles 56 nerve endings 56 capillaries 56 ligaments 56 abdominal muscles 55 neurons 55 connective tissue 55 proteins 55 dermis 54 cartilage 54 synapses 53 axons 53 epithelial cells 53 axon 52 musculature 52 ligament 52 progenitor cells 52 mitochondria 52 synapse 52 epidermis 51 left ventricle 51 ventricle 51 actin 51 glycogen 51 endothelial cells 51 cilia 51 immune cells 51 protein 51 fatty tissue 50 adipose tissue 50 follicles 50 tendon 50 enzymes 49 cell membrane 49 soft tissues 49 neuron 49 hair follicle 49 tissues 49 scar tissue 49 cells 49 lactic acid 49 facial muscles 49 DNA strands 49 testes 49 enzyme 48 autophagy 48 amino acids 48 spinal cord 48 protein synthesis 48 molecules 48 metabolism 48 abdominals 48 follicle 47 neutrophils 47 extracellular matrix 47 tissue 47 intestines 47 fibers 47 pancreas 47 motility 47 Muscles 47 cell membranes 47 lymphocytes 47 joints 47 glands 47 lipids 47 secretion 47 dendrites 47 fibrous 47 intestinal tract 47 glutes 46 filaments 46 sciatic nerve 46 nuclei 46 gland 46 vesicles 46 salivary glands 46 small intestine 46 metabolic 46 aerobic 46 electrical impulses 46 tumor cells 46 molecule 46 myelin 46 internal organs 46 adrenal glands 46 telomeres 46 lung tissue