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  • Title: The pit organs of elasmobranchs: a review.
    Author: Peach MB, Marshall NJ.
    Journal: Philos Trans R Soc Lond B Biol Sci; 2000 Sep 29; 355(1401):1131-4. PubMed ID: 11079384.
    Abstract:
    Elasmobranchs have hundreds of tiny sensory organs, called pit organs, scattered over the skin surface. The pit organs were noted in many early studies of the lateral line, but their exact nature has long remained a mystery. Although pit organs were known to be innervated by the lateral line nerves, and light micrographs suggested that they were free neuromasts, speculation that they may be external taste buds or chemoreceptors has persisted until recently. Electron micrographs have now revealed that the pit organs are indeed free neuromasts. Their functional and behavioural role(s), however, are yet to be investigated.
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