28 entries under expression topic. ×

4
organs of the digestive system(system, organism, organ)
3
circulatory system(idiom, name, body, system)
3
digestive system(idiom, name, body, system)
3
endocrine system(idiom, name, body, system)
3
muscular system(idiom, name, body, system)
3
nervous system(idiom, name, body, system)
3
reproductive system(idiom, name, body, system)
3
respiratory system(idiom, name, body, system)
3
skeletal system(idiom, name, body, system)
3
urinary system(idiom, name, body, system)
2
system organ class(medicine, biology, system, organism)
1
multi-organ system failure(system, organism, organ)
1
alimentary system(name, system, organism)
1
basal systems of organs(medicine, biology, system)
1
cardiovascular system(name, system, organism)
1
class of organ systems(medicine, biology, system)
1
hemolymphoid system(name, system, organism)
1
integumental system(name, system, organism)
1
integumentary system(idiom, body, system, organism)
1
isolated organ bath system(medicine, biology, system)
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APASmart Define. (1970). organ system thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/organ_system/thesaurus/narrower
ChicagoSmart Define. 1970. "organ system thesaurus" https://smartdefine.org/organ_system/thesaurus/narrower (accessed September 25, 2026).
HarvardSmart Define 1970, organ system thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/organ_system/thesaurus/narrower>.
MLASmart Define. "organ system thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/organ_system/thesaurus/narrower>