retinaculum

retinaculum
Small hook at tip of appendices internae (e.g., Caridea), one of many serving to join left and right pleopods together. (Pl. retinacula) (Syn. cincinnulus) [Moore and McCormick, 1969].
Small hook at tip of appendix interna, one of many serving to interlock right and left pleopods. (Pl. retinacula) (Syn. cincinnulus) [McLaughlin, 1980].
(Order Cumacea):
In first pair of maxillipeds, one of several small, hook-like structures along inner margin of basis. Serves to interlock left and right maxillipeds. (Syn. coupling hook) [Stachowitsch, 1992].
(Order Isopoda):
In maxilliped, one in a series of small, hook-like structures along margin of endite of second segment (basis). Serves to interlock left and right maxillipeds. (Syn. coupling seta, coupling hook) [Stachowitsch, 1992].
(Order Stomatopoda):
One in a series of hooks on appendix interna of each abdominal appendage (pleopod); interlocks with retinacula of second member of pleopod pair and permits both pleopods to move in unison [Stachowitsch, 1992].
(Superorder Syncarida):
In male anaspidacean, one in a series of small, hook-like structures along inner branch (endopod) of modified first and second pairs of pleopods. Serves to interlock left and right pleopods [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • Retinaculum — or retinacula may be:Human anatomy: * Peroneal retinacula * Flexor retinaculum of the hand * Extensor retinaculum of the hand * Retinaculum musculorum flexorum pedis, in lower leg and footInvertebrate anatomy: * the Retinaculum (moth), in wing *… …   Wikipedia

  • Retinaculum — Ret i*nac u*lum, n.; pl. {Retinacula}. [L., a holdfast, a band. See {Retain}.] 1. (Anat.) (a) A connecting band; a fr[ae]num; as, the retinacula of the ileoc[ae]cal and ileocolic valves. (b) One of the annular ligaments which hold the tendons… …   The Collaborative International Dictionary of English

  • Retinacŭlum — Retinacŭlum, 1) bei den Römern ein Tau, womit das Schiff am Lande festgemacht wurde; 2) chirurgisches Instrument zum Zurück od. Festhalten von Theilen, z.B. bei der Einrichtung, ein Bruchband, Haken; 3) die Häkchen an den Samen der Akantheen,… …   Pierer's Universal-Lexikon

  • retinaculum — [ret΄ n ak′yə ləm] n. pl. retinacula [ret΄ n ak′yələ] [ModL < L, that which holds back, tether < retinere, to RETAIN + dim. suffix] Biol. an often hooked or sticky structure, band, etc. serving to hold parts, seeds, eggs, etc. together or… …   English World dictionary

  • retinaculum — A frenum, or a retaining band or ligament. [L. a band, a halter, fr. retineo, to hold back] antebrachial flexor r. thickening of distal antebrachial fascia just proximal to radiocarp …   Medical dictionary

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  • retinaculum — /ret n ak yeuh leuhm/, n., pl. retinacula / leuh/. 1. Anat., Zool. any of various small structures that hook, clasp, or bind other structures to move them or hold them in place. 2. Entomol. a bristle on the butterfly forewing that clasps to the… …   Universalium

  • retinaculum — ret•i•nac•u•lum [[t]ˌrɛt nˈæk yə ləm[/t]] n. pl. la ( lə). zool. anat. any of various anatomical structures that hook, clasp, or bind individual parts, as seeds or organs, together or in place • Etymology: 1815–25; < NL; L retināculum tether… …   From formal English to slang

  • Retinaculum flexorum — Die Sehnenscheiden und Beugesehnen des Handgelenkes beim Menschen. Der Verlauf des Nervus medianus unter dem Retinaculum flexorum ist nicht dargestellt. Das Retinaculum flexorum (von lat. retinaculum „Band“, „Zügel“ und flexor „Beuger“) – auch… …   Deutsch Wikipedia

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