visceral pouch (MOLL: Bivalvia) A small extension of the visceral mass on the anterior side of the adductor muscle in oysters.
visceral segments (ARTHRO: Insecta) All abdominal segments anterior to the genital segments; only the anterior visceral segments are variously modified.
visceral sinus (ARTHRO: Insecta) A central cavity between the dorsal and ventral sinuses, containing the main internal organs.
visceral trachea (ARTHRO: Insecta) The median segmental trachea beginning at a spiracle and branching to the alimentary canal, fat tissue, and reproductive organs.
visceral tracheal trunk (ARTHRO: Insecta) A longitudinal trunk associated with the walls of the alimentary canal.
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