- nuchal organ
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(s).1. (ANNELIDA: Polychaeta)2. (ARTHROPODA: Crustacea)3. (SIPUNCULA)
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
nuchal organ
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Nuchal organ — The Nuchal organ (no). Source: doi:10.1007/s004350000022 The nuchal organ is a ciliated pit[1] or groove present at the posterior end of the prostomium of annelid worms … Wikipedia
nuchal organ — Sense organ on upper side of head in many branchiopods. (Syn. neck organ) [Moore and McCormick, 1969]. (Class Branchiopoda): Sense organ on upper side of cephalon. (Syn. neck organ) [McLaughlin, 1980]. (Order Cladocera): Frontal organ… … Crustacea glossary
nuchal caruncle — (ANNELIDA) A sensory organ on the prostomium, or extending posteriorly in the form of a ciliated ridge or groove … Dictionary of invertebrate zoology
neck organ — See: nuchal organ [Martin, 2005]. See: nuchal organ [McLaughlin, 1980]. (Order Cladocera): Nuchal organ [Stachowitsch, 1992] … Crustacea glossary
dorsal organ — Poorly understood glandular sensory structures (actually several different structures that may or may not be homologous) on the head of many crustaceans [Brusca and Brusca, 2002]. Thickened glandular area of hypoderm of dorsal surface just behind … Crustacea glossary
neck organ — see nuchal organ … Dictionary of invertebrate zoology
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
Prostomium — (sometimes also called acron) is the first body segment in annelids worms. It is in front of (but does not include) the mouth, being usually a small shelf or lip like extension over the dorsal side of the mouth. It sometimes bears antennae and… … Wikipedia
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… … Wikipedia
