Exsertion: a protrusion: an extension of a line or other ornamentation beyond its ordinary course. [Please select]
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A prolonged flight must first expand his two great tracheal sacs; these enormous receptacles being gorged on air will throw back the lower part of the abdomen, and permit the exsertion of the organ. [Please select]
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The fact being incontestable, we must evidently admit that the exsertion of the organ is rendered possible only by the expansion of the tracheal vesicles. [Please select]
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