- ocular plates
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(ECHINODERMATA: Echinoidea)Plates at the terminal end of the ambulacral areas.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
ocular plate — Median cephalic plate bearing the eyestalks laterally (Fig. 3A) [Perez Farfante and Kensley, 1997]. (Order Stomatopoda): Second of three plates (fastigial, ocular, postocular composing acron at tip of head; bears eyestalks (ocular peduncles)… … Crustacea glossary
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
rostrum — (1) Anteriorly projecting, unpaired, usually rigid median extension of carapace between eyes or ocular peduncles; (2) anterior beaklike projection of valve margins overhanging incisure or notch (Ostracoda); (3) unpaired anteroventral plate of… … Crustacea glossary
nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… … Universalium
Optical microscope — Microscope Uses Small sample observation Notable experiments Discovery of cells Inventor Hans Lippershey Zacharias Jans … Wikipedia
Nautilus — For other uses, see Nautilus (disambiguation). Nautilus Temporal range: Triassic–Present[1] … Wikipedia
Snake scales — Snakes, like other reptiles, have a skin covered in scales. Boulenger, George A. 1890 The Fauna of British India. page 1] Snakes are entirely covered with scales or scutes of various shapes and sizes. Scales protect the body of the snake, aid it… … Wikipedia
acron — Anteriormost part of body carrying eyes, not considered to be true cephalic somite. (Syn. ophthalmic somite, presegmental region. (Some authors recognize as protocephalon anterior part of head) [Moore and McCormick, 1969]. Anteriormost part of… … Crustacea glossary
Color perception test — Intervention Example of an Ishihara color test plate. The numeral 74 should be clearly visible to viewers with normal color vision. Viewers with dichromat or anomalous trichromat may read it as 21 , and viewers with achromat may see nothing … Wikipedia
Crotalus scutulatus — Conservation status Least Concern … Wikipedia