Ventral gland see prothoracic gland

ventral groove (ARTHRO: Insecta) In Collembola, a cuticular channel down the middle ventral line of the body from the labium to the anterior part of the ventral tube; thought to function in osmoregulation.

ventralia n. [L. venter, belly] (GNATHO) Paired sensory bristles found ventrally on the head of jaw worms.

ventral membrane (ARTHRO: Insecta) In Diptera, skin-like tissue connecting the tergites and the sternites along the sides of the abdomen.

ventral muscles (ARTHRO: Insecta) Tergal and sternal longitudinal abdominal muscles running between the intersegmental folds or on the antecostae of successive sterna.

ventral nerve cord The primary nerve cord of all invertebrates, except those of the Hemichordata and Chordata phyla.

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