spiracular atrium
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atrium — n.; pl. atria [L. atrium, vestibule] 1. A cavity, division, entrance or passageway of various invertebrates. 2. (ANNELIDA) a. A diverticulum of the spermatheca; a tubular or capsular prostate. b. Male reproductive organ in leeches, consisting of… … Dictionary of invertebrate zoology
atrial orifice — (ARTHROPODA: Insecta) The exterior opening of the spiracular atrium … Dictionary of invertebrate zoology
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
closing apparatus of a spiracle — (ARTHROPODA: Insecta) One or two movable valves in the spiracular opening or internal constriction closing off the atrium from the trachea … Dictionary of invertebrate zoology
filter apparatus — (ARTHROPODA: Insecta) Opposing rows of tapering processes of some spiracular atrial walls, clothed with interlacing hairs, that permits passage of air and prevents foreign particles or water from penetrating into the atrium … Dictionary of invertebrate zoology
