chordotonal organ

chordotonal organ
Subcuticular sense organs of insects and perhaps nematodes that consist of one to several hundred chordotonal sensilla (scolopidia); attached to the cuticle that function as mechanoreceptors; abundant in tympanal organs; a scolopophorus organ; see tympanal organ, myochordotonal organ.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • chordotonal organ — chordotonal organ, a structure especially in insects, spiders, and certain larvae which is capable of sensing small movements by means of sensory cells responsive to sound vibrations …   Useful english dictionary

  • Chordotonal organ — Chordotonal organs are stretch receptor organs in insects and other arthropods[1] They are used to detect the position of the body segments and appendages, or, in tympanal organs, the vibrations caused by sounds. An example for hearing is the… …   Wikipedia

  • Tympanal organ — A Tympanal organ is a hearing organ in insects, consisting of a membrane (tympanum) stretched across a frame backed by an air sac. Sounds vibrate the membrane, and the vibrations are sensed by a chordotonal organ. Tympanal organs occur in just… …   Wikipedia

  • Johnston's organ — (ARTHROPODA: Insecta) A chordotonal organ located in the second segment of the antenna and functioning in sound perception, flight speed indicator or water wave perception …   Dictionary of invertebrate zoology

  • scolopophorus organ — see chordotonal organ …   Dictionary of invertebrate zoology

  • myochordotonal organ — (ARTHROPODA: Crustacea) In Decapoda, a proprioceptor at the proximal end of the meropodite, a flat membrane lying between the skeleton and sheath of the accessory flexor muscle of the carpus, with distal bipolar sensory cells passing through the …   Dictionary of invertebrate zoology

  • Crista acustica — (also Siebold s organ, or crista acoustica) is a part of the hearing organ (tibial organ) in some insects (eg, grasshoppers, crickets, katydids). It is a collection of sensory cells that form a crest (hence the name) on top of the hollow tube… …   Wikipedia

  • Range fractionation — is a term used in biology. Sense organs are usually composed of many sensory receptors measuring the same property. These sensory receptors show a limited degree of precision due to an upper limit in firing rate. If the receptors are endowed with …   Wikipedia

  • crista acustica — (ARTHROPODA: Insecta) A chordotonal organ of the fore tibia of certain Orthoptera, that contain a series of scolopidia; organ of Siebold …   Dictionary of invertebrate zoology

  • scolopidium — n.; pl. ia [Gr. dim. skolos, pointed object] A mechanoreceptor (part of a chordotonal organ) consisting essentially, of three cells: sensory neuron (scolopale), enveloping cell, and an attachment, or cap cell; scolopophore; sensillum… …   Dictionary of invertebrate zoology

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