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Topic: Spongocoel

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	Learn more about Sponge in the online encyclopedia. (Site not responding. Last check: 2007-10-31)
		The open end is called the osculum, and the interior is the spongocoel.
		The walls are perforated with microscopic holes to allow water to flow through the spongocoel.
		Choanocytes, which line the spongocoel and function as the sponge's digestive system, are remarkably similar to the protistan choanoflagellates.
	www.onlineencyclopedia.org /s/sp/sponge.html (616 words)

	Sponge
		The structure of a sponge is simple: it is shaped like a tube, with one end stuck to a rock or other object and an open end, the osculum, open to the environment.
		The spongocoel, or interior of the sponge, is composed of walls perforated with microscopic pores that allow water to flow through the spongocoel.
		Porocytes are tubular cells that make up the pores into the sponge body through the mesohyl.
	www.brainyencyclopedia.com /encyclopedia/s/sp/sponge.html (1391 words)

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