internal organ

Noun
  1. is a type of: organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function
    subtypes:
    • entrails, innards, viscera - internal organs collectively (especially those in the abdominal cavity)
    • excretory organ, urinary organ - an organ that separates waste substances from the blood and discharges them
    • liver - large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes
    • heart, pump, ticker - the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
    • breadbasket, stomach, tum, tummy - an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion
    • respiratory organ - any organ involved in the process of respiration
    • bowel, gut, intestine - the part of the alimentary canal between the stomach and the anus
    • hindgut - the caudal part of the alimentary canal in vertebrate embryos
    same as: viscus

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