Beside the pineal

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  • parapineal — /par ə pinˈi əl/ adjective Beside the pineal gland, usu applied to the pineal eye ORIGIN: ↑para 1 and ↑pineal …   Useful english dictionary

  • parapineal — Beside the pineal; denoting the visual or photoreceptive portion of the pineal body present, if not functioning, in certain lizards. * * * para·pin·e·al (par″ə pinґe əl) pertaining to the parapineal organ of certain lower… …   Medical dictionary

  • parapineal organ — the left side counterpart of the pineal organ, q.v., in the dorsal midline between the telencephalon and the optic lobes. It is reduced or absent in some fishes …   Dictionary of ichthyology

  • parapineal organ — a median dorsal outgrowth of the pineal body in certain lower vertebrates such as tailless amphibians, primitive fishes, and lizards; its principal cell type is an apparent photoreceptor. In some species it may specialize to form an extracranial… …   Medical dictionary

  • parietal organ — parapineal o …   Medical dictionary

  • Opsin — Three dimensional structure of bovine rhodopsin. The seven transmembrane domains are shown in varying colors. The chromophore is shown in red. Opsins are a group of light sensitive 35–55 kDa membrane bound G protein coupled receptors of the… …   Wikipedia

  • Parietal eye — A parietal eye, also known as a parietal organ or third eye is a part of the epithalamus present in some animal species. The eye may be photoreceptive and is usually associated with the pineal gland, regulating circadian rhythmicity and hormone… …   Wikipedia

  • Gymnophiona — Gymnophiones Gymnophiona sp …   Wikipédia en Français

  • pineal organ — the light sensitive dorsal evagination of the diencephalon part of the brain. See also epiphysial apparatus. This large and dark body lies to the right of the midline while its left side counterpart is the parapineal, not always present or… …   Dictionary of ichthyology

  • POISSONS — Jusqu’à la fin du XIXe siècle, l’accord était général pour considérer les Poissons comme une vaste classe de Vertébrés au même titre et sur le même plan que les Amphibiens, les Reptiles, les Oiseaux et les Mammifères. Mais, depuis que les progrès …   Encyclopédie Universelle

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