Nephridiopore
A nephridiopore is part of the nephridium, an excretory organ found in many organisms, such as flatworms and annelids.[1] Polychaetes typically release their gametes into the water column using nephridiopores.[2]
Nephridia are homologous to nephrons or uriniferous tubules found in the kidney of humans. Nephridiopores are present in ventral region. The nephridium consists of an opening called the nephrostome, a long convoluted tubule, and another opening called the nephridiopore. Body fluids are filtered in through the nephrostome and passed through the convoluted tubule system.[3] Essential substances are reabsorbed through active mechanisms and waste products are secreted back into the lumen of the tube.[4] The resulting excretory fluid or urine is passed out through the nephridiopore.[3]
References
- ^ "nephridium | anatomy | Britannica". www.britannica.com. Retrieved 2022-03-08.
- ^ "Lab 7: Annelids and Smaller Ecdysozoans - Zoo-lab". UW-La Crosse. Retrieved 2022-03-08.
- ^ a b Molnar, Charles; Gair, Jane (2015-05-14). "22.3. Excretion Systems".
{{cite journal}}: Cite journal requires|journal=(help) - ^ "41.3B: Flame Cells of Planaria and Nephridia of Worms". Biology LibreTexts. 2018-07-17. Retrieved 2022-03-08.
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