frontal organ

frontal organ
(ARTHROPODA: Crustacea)
a. Sensory cells on the anterior surface of the cephalon of malacostracans; the haft organ or frontal eye in non-malacostracans. b. The Bellonci organ of ostracods; see organ of Bellonci, frontal eye complex, x-organ.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • frontal organ(s) — Sensory cells on anterior surface of cephalon. (Syn. haft organ, frontal eye) [McLaughlin, 1980]. Sensory cells or setae on front surface of heads on some branchiopods, copepods, and decapods [Moore and McCormick, 1969]. (Order Cladocera):… …   Crustacea glossary

  • ventral frontal organ — Paired sensory structure associated with the nauplius eye of nonmalacostracan crustaceans [McLaughlin, 1980]. (Order Anostraca): Frontal organ [Stachowitsch, 1992] …   Crustacea glossary

  • organ of Bellonci — (ARTHROPODA: Crustacea) Receptors innervated from the medullae terminales of the brain, consisting of ciliated sensory neurons associated with supporting cells, such as glial, bordering and perilemmal cells; has also been called frontal organ, x… …   Dictionary of invertebrate zoology

  • frontal eye complex — (ARTHROPODA: Crustacea) The eyes or reduced eyes innervated from the nauplius eye center; see organ of Bellonci, frontal organ …   Dictionary of invertebrate zoology

  • frontal eye — see frontal organ …   Dictionary of invertebrate zoology

  • frontal appendage — One pair of filaments arising in many Anostraca from bases of antennae but independent of them; may be ramified [Moore and McCormick, 1969]. (Order Diplostraca): Frontal organ [Stachowitsch, 1992]. (Order Anostraca): Paired filaments arising from …   Crustacea glossary

  • frontal filament — (Subclass Copepoda): One of two slender projections extending from rostrum of freeliving copepod. With sensory function [Stachowitsch, 1992]. (Class Ostracoda): Frontal organ [Stachowitsch, 1992] …   Crustacea glossary

  • ventral frontal organ — (ARTHROPODA: Crustacea) Paired sensory structures associated with the nauplius eye …   Dictionary of invertebrate zoology

  • frontal band — Glandular organ of adhesion in frontal region of various parasitic copepods serving for attachment to host fishes [Moore and McCormick, 1969]. Glandular organ of adhesion in frontal region of various parasitic copepods used for attachment to host …   Crustacea glossary

  • frontal — 1. In front; relating to the anterior part of a body. 2. Referring to the f. (coronal) plane or to the f. bone or forehead. SYN: frontalis [TA]. * * * fron·tal frənt əl adj …   Medical dictionary

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