cervical sinus
(ARTHROPODA: Crustacea)
In Cladocera, a rounded to angular indentation anteriorly along the edge of the carapace, exposing the rear part of the head.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • Cervical sinus — Pattern of the branchial arches. I IV branchial arches, 1 4 branchial pouches (inside) and/or pharyngeal grooves (outside) a Tuberculum laterale b Tuberculum impar c Foramen cecum d Ductus thyreoglossus e Sinus cervicalis …   Wikipedia

  • cervical sinus — cervical notch …   Dictionary of ichthyology

  • cervical sinus — Rounded to angular indentation at front of cladoceran carapace along dorsal edge, exposing rear part of head [Moore and McCormick, 1969]. (Order Cladocera): Cervical notch [Stachowitsch, 1992]. (Order Cladocera): Rounded to angular indentation… …   Crustacea glossary

  • cervical sinus — a temporary depression caudal to the second pharyngeal (hyoid) arch, containing the succeeding pharyngeal arches; it is overgrown by the second pharyngeal arch and closes off as the cervical vesicle …   Medical dictionary

  • cervical notch — Strong indentation of carapace at level of cervical groove (e.g., scyllarid palinurans). (Syn. cervical incision) [Moore and McCormick, 1969]. Strong indentation of carapace at level of cervical groove [McLaughlin, 1980]. (Order Cladocera):… …   Crustacea glossary

  • cervical vesicle — a sac in the cervical region of the embryo formed by the closing off of the cervical sinus; it usually disappears, but may persist as a cervical cyst …   Medical dictionary

  • cervical duct — the opening from the exterior into the temporary cervical sinus of the embryo …   Medical dictionary

  • Cervical cancer — Classification and external resources Histopathologic image (H E stain) of carcinoma in situ, stage 0. ICD 10 C …   Wikipedia

  • Cervical intraepithelial neoplasia — Classification and external resources ICD 10 D06, N87 ICD 9 …   Wikipedia

  • sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or …   Medical dictionary

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