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]
A nephridiopore is part of the nephridium, an excretory organ found in many organisms, such as flatworms and annelids. Polychaetes typically release their...
called nephrostomes. This waste is passed out of the organism at the nephridiopore. The primary urine produced by filtration of blood (or a similarly functioning...
typically lead to a urinary bladder, which empties to the outside at a nephridiopore. Leeches are hermaphrodites, with the male reproductive organs, the...
the forward side of a septum while the second-stage filter and the nephridiopore (exit opening in the body wall) are in the following segment. As a result...
collecting ducts, one on either side, and each duct has one or more nephridiopores through which the wastes exit. Semiterrestrial and freshwater nemerteans...
filtration organs. Metabolic waste is voided from the bladders through a nephridiopore near the front of the upper part of the mantle cavity and excreted....
externally visible on the body demarking the segments; dorsal pores and nephridiopores exude a fluid that moistens and protects the worm's surface, allowing...
appendages, as it is passed along the associated duct and through the nephridiopore into the mantle cavity. Octopuses (along with cuttlefish) have the highest...
nephrostome, opens into the coelomic cavity at the anterior end, close to the nephridiopore. The metanephridia have an osmoregulation function but it is unclear...
microvilli. The tube cells' flagella drive the water towards exits called nephridiopores, while their microvilli reabsorb reusable materials and as much water...
nephridioduct, to an opening at the base of the nearest leg known as a nephridiopore. The pouch is occupied by special cells called podocytes, which facilitate...
opens to the coleomic cavity and connects with the exterior though a nephridiopore. Some species are bioluminescent, and produce a yellow light. Their...
There was also a lack of dorsal pores on his specimen, with clear nephridiopores, the first being at the fourth annulus. Benham's specimen had "minute"...
products to the coelom and dumping the remaining wastes through a pair of nephridiopores beside the anus. There is a nervous center between the mouth and anus...
introvert is finely wrinkled, with a dusting of tiny papillae. The nephridiopores and the anus are at the anterior end of the trunk. The oral disc surrounds...
partial head, mouth, mantle, mantle cavity, foot, gills, gonopore, nephridiopore and anus. The ventral surface is bordered with the mantle and moving...
sabellids (such as Sabella pavonina) lack an operculum. A single median nephridiopore is located dorsally on the head, between the upper lip and a median...
mature and for storage. Sperm pass out into the water column through nephridiopores, which are also used for the excretion of waste products. The sperm...
female, every fertile segment has a pair of spermathecae opening at the nephridiopores. In the male, every genital segment has a right and a left protrusible...
from the ventral surface of the body behind the mouth and a pair of nephridiopores nearby. The anus is at the posterior end of the body. There are two...
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