Frequently, however, this exoskeletal somite may be differentiated into various regions. [Please select]
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With what exoskeletal structures is each part covered. [Please select]
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The firm regions are commonly segmental in their arrangement, and the intervening flexible connections render possible accurate motions of the exoskeletal parts in relation to each other, the motions being due to the contraction of muscles which are attached within the exoskeleton. [Please select]
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