The nephridium (plural nephridia) is an invertebrate organ, found in pairs and performing a function similar to the vertebrate kidneys (which originated from the chordate nephridia). Nephridia remove metabolic wastes from an animal's body. Nephridia come in two basic categories: metanephridia and protonephridia. All nephridia- and kidney- having animals belong to the clade Nephrozoa.
The nephridium (plural nephridia) is an invertebrate organ, found in pairs and performing a function similar to the vertebrate kidneys (which originated...
nephridia, which produce either ammonia or uric acid as a waste product. The nephridium also plays an important role in maintaining water balance in freshwater...
protonephridia, Hatschek's nephridium is a large unpaired excretory structure found within Branchiostoma virginiae. The nephridium, along with its collection...
excretion is a nephridium. The most primitive gastropods retain two nephridia, but in the great majority of species, the right nephridium has been lost...
between one and four pairs of tracheae. The excretory system includes a nephridium and one or two pairs of Malpighian tubules. Several families of mites...
A nephridiopore is part of the nephridium, an excretory organ found in many organisms, such as flatworms and annelids. Polychaetes typically release their...
pericardial cavity of the branchial hearts, each of which is connected to a nephridium by a narrow canal. The canal delivers the excreta to a bladder-like renal...
segment. This tubule then leads to the main body fluid filtering organ, the nephridium or metanephridium, which removes metabolic waste from the coelomic fluid...
posterior part of the body, and shed their gametes into the water through the nephridium. Once fertilized, the eggs hatch into a free-living trochophore larva...
the anus, except in Phascolion and Onchnesoma, which have only a single nephridium. A ciliated funnel, or nephrostome, opens into the coelomic cavity at...
form renal appendages which are in direct contact with the thin-walled nephridium. The urine is first formed in the pericardial cavity, and is modified...
AmphiPax2/5/8: developmental expression patterns in optic support cells, nephridium, thyroid-like structures and pharyngeal gill slits, but not in the midbrain-hindbrain...
research of amphioxus, the anatomical terms "Hatschek's pit" and "Hatschek's nephridium" are derived. Studien über Entwicklungsgeschichte der Anneliden. Ein Beitrag...
particles are passed to the mouth. Behind the mouth, and close to the nephridium, which is raised on a protuberance, are two chetae (bristles), the bases...
ultrafiltration of the blood through the partition between haemocoelom and nephridium. The composition of the urinary solution is modified in the nephridioduct...
into a large venous sinus within the head and foot, which contains the nephridium, an excretory organ with a function similar to that of the vertebrate...
segment has a right and a left protrusible penis, into which both the nephridium and a sperm-sac open. The wide funnels of the nephridia of this region...
is rarely observed and if present is without villi. They have a single nephridium. Onchnesoma intermedium Murina, 1976 Onchnesoma magnibathum Cutler, 1969...
development of the nephridia in Amphioxus, Introduction and part I: Hatschek's Nephridium. Q.J.M.S. 76, 499–510. Goodrich E.S. 1934. 'The early development of the...
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