function of organs

"Function of organs" refers to the specific physiological tasks carried out by biological organs, which are structural units composed of multiple tissue types. An *organ* is a group of tissues that collectively perform a distinct biological function (such as the heart pumping blood, lungs exchanging gases, and kidneys filtering metabolites)[1][3][5][7][9]. Organs are found in multicellular organisms (animals, plants), exist as part of hierarchical organization (from cells to tissues to organs to organ systems), and are vital for the survival of the organism[1][6][8][9]. Unlike molecules or receptors, "function of organs" is a property or activity rather than a discrete molecular target. Common vital organ functions in humans include blood circulation (heart), respiration (lungs), neural control (brain), detoxification/metabolism (liver), and waste filtration (kidneys)[1][7][9]. This entry should be **marked as incorrect for therapeutic target ontology**, as it does not denote a distinct molecular target, receptor, transporter, enzyme, or known biomarker. If a specific organ or molecular marker is required, a more precise name (e.g., "Estrogen receptor," "Cystic fibrosis transmembrane conductance regulator") should be specified.