Term
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Definition
| atleast one pair of chitinous setae; coelomate |
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Term
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Definition
| metamerism (repeating segments); segments divided by septa (peritoneal tissue) |
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Term
| nervous system/sensory receptors and organs |
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Definition
| cephalized; advanced brain; longitudinal nerve cords; ganglia in segments |
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Term
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Definition
| closed system: dorsal and ventral blood vessels; uni-directional blood flow (exception: leeches- reduced or no circ. system; gas exchange across body wall) |
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Term
| excretion and osmoregulation |
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Definition
| diffusion; nephridia- proto (rare), meta (common) w/ nephrostome, tubule, nephridiopore |
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