Ventrad: extending or directed toward the under side.
Ventral: pertaining to the under surface of abdomen: in Diptera, that face of the leg which is inferior when laterally extended.
Ventral chain: refers to the series of ganglia of the nervous system.
Ventral comb: in Trichoptera, a transverse row of fine teeth on venter.
Ventral diaphragm: is a fine membrane covering the central nerve cords and ganglia: also called ventral heart.
Ventral heart: = ventral diaphragm, q.v.
Ventral plate: a thickening of the blastoderm of an egg from which the embryo, but not the amnion or serosa is formed.
Ventral scale: in Diaspinae, the under part of the puparium, interposed between the insect and the plant.
Ventral tube: in Collembola, a tube or tubercle proceeding from the ventral side of the first abdominal segment.
Ventricose: with a big belly: distended; inflated.