Science Fair Project Encyclopedia
Metanephridium
Metanephridium (pl. metanephridia) is a type of excretory gland or nephridium found in many types of invertebrates such as annelids and mollusks. It typically consists of a ciliated funnel opening into the body cavity or coelom connected to a duct which may be variously glandularized, folded or expanded (vesiculate) and which typically opens to the organism's exterior. In many earthworms these nephridial ducts open into the digestive tract instead.
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details