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The primary structures of the excretory system is the lungs, kidneys, livers, and the skin.

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Wilburn Weissnat

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βˆ™ 2y ago
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βˆ™ 14y ago

Kidneys, Bladder, Urethra, and the Sphincter Muscles.

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βˆ™ 13y ago

urinary bladder,urethra, ureter, and the kidney

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βˆ™ 11y ago

The primary structures of the excretory system is the lungs, kidneys, livers, and the skin.

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βˆ™ 11y ago

The main structure is the kidneys

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βˆ™ 12y ago

i legit dont know i think its the anus :)

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βˆ™ 12y ago

a Malpighian Tubule

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Q: What are the structure of the excretory system?
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