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Internal orifices include the orifices of the outflow tracts of the heart, between the
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179:, breathing, and vocalizations such as
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284:, and a few mammals
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310:heart valves
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348:References
297:arthropods
282:amphibians
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187:ear canals
147:human body
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225:urination
203:into the
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304:Internal
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260:orifices
231:in males
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137:External
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270:cloaca
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