• The act of secreting; the process by which material isseparated from the blood through the agency of the cells of thevarious glands and elaborated by the cells into new substances so asto form the various secretions, as the saliva, bile, and otherdigestive fluids. The process varies in the different glands, andhence are formed the various secretions.


    Secretion meaning & definition 1 of Secretion.


  • A general term used to describe the products of glands in animals and plants. Glands such as the thyroid, testes, ovaries, adrenals, pituitary synthesize hormones which they excrete into the bloodstream. These are endocrine glands. Other glands include sweat, prostate, lachrymal, and Bartholin's glands. These are exocrine glands which excrete their products into places other than the bloodstream. The pancreas and stomach are unusual in that their secretions contain both endocrine (insulin) and exocrine (digestive) hormones. The female breast secretes milk and is an exocrine gland. The testis is a highly specialised mixed gland with both endocrine (testosterone) and exocrine (sperm)functions. The female ovary is a specialised mixed gland also.

    The word is also used loosely to describe mucous-like substances which are transudates or exudates. These are substances derived from fluid in the tissues and which are driven across a membrane e.g. vaginal wall by a pressure gradient - usually blood pressure but could be osmotic.
    Secretions may become profuse during illness e.g. common cold as the body attempts to wash away the infective agent.

    Secretion meaning & definition 2 of Secretion.


  • the process by which an animal or plant produces and releases a liquid, or the liquid produced:

    Secretion meaning & definition 3 of Secretion.


  • A process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion.

    Secretion meaning & definition 4 of Secretion.

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