nephrostome

Body fluids are filtered in through the nephrostome and passed through the convoluted tubule system.

The nephrostome is covered from the inside with cilia, which push the water, metabolic wastes, unnecessary hormones and other substances into the metanephridium.

A ciliated funnel, or nephrostome, opens into the coelomic cavity at the anterior end, close to the nephridiopore.

The nephridia consists of an opening called nephrostome, a long convoluted tubule and another opening called the nephridiopore.

The waste in the coelom fluid from a forward segment is drawn in by the beating of cilia of the nephrostome, carried through the septum (wall) which forms a series of loops entwined by blood capillaries that also transfer waste into the tubule of the nephrostome.