@article {475,
	title = {Sobre los nefridios de Phascolosoma granulatum (Sipuncula)},
	journal = {Separata de la revista de la "Facultad de Ciencias"},
	volume = {15},
	number = {1},
	year = {1974},
	note = {@ IN SPANISH, NO ENGLISH ABST - CONCLUSIONS: TRANSLATION ABBREV. THE NEPHRIDIA OF P.GRAN. PRESENT A SECOND NONCILIATED NEPHROSTOME BESIDES THE PREVIOUSLY DESCRIBED ONE. THIS SECOND ONE COULD BE A REMNANT OF THE COELOMOSTOME. IF WE COMPARE THIS WITH THE METANEPH (MYXONEPHRIDIA) OF THE POLYCH. DESCRIBED BY GOODRICH (45) SINCE THERE ARE SEVERAL MORPHOLO. SIMILARITIES BETWEEN THE TWO. FROM INSIDE TO OUTSIDE THE NEPH WALL HAS A CILIATED EPITHEL W FINE SMALL PIGMENTED GRANULES, ON THE EXTERNAL LAYER WHERE MUSCLE CELLS \& GRANULATED CELLS SURROUNDED BY CONNECTIVE TISSUE AND A PERITONEAL MESOTHELIUM IN ALL THE EXTERNAL PART OF THE NEPH. THE INTERNAL PIGMENTED EPITHEL, THE NEPHROSTOMIC CILIATED EPITH, AND THE PERITONEAL MESOTHEL OF THE NEPH CAME FROM THE SAME CELLULAR TYPE. THE MESOTH OF THE BODY WALL. THERE ARE INTERMEDIATE FORMS BETWEEN THE CILIATED EPITH \& BOTH MESOTHEL, WHICH ARE IDENTICAL, ON ONE HAND AND BETWEEN THE CILIATED EPITH \& THE PIGMENTED EPI ON THE OTHER HAND. THE PIGMENTED EPITHEL CELLS ARE OF 2 TYPES; FLATTENED CELLS OF REPLACEMENT THAT BY GROWING AND MATURATION WILL GIVE THE SECOND TYPE WHICH IS ELONGATED. THE SET HAS A SECRETORY FUNCTION, APOCRINE TYPE SIMILAR TO ESTEROID CELLS IN VERT. ADRENAL GLANDS. THE DISTAL PART OF NEPHRID IS TYPICALLY GROUPED FORMING FLASK SHAPED ORGANS WHICH ARE PROVIDED WITH PULSATING SPACE WHICH SEEMS TO BE IN COMMUNICATION WITH THE COELOMIC CAVITY. AND WITH A CILIATED CHANNAL THAT GOES TO THE NEPH LUMEN. BOTH IN THE MOUTH OF THE COELOMIC BLIND SACS OF THE PROXIMAL AREAS AND IN SOME OF THE FLASK ORGANS THERE ARE URN CELLS FIXED ON THE EXTERNAL MESOTHEL THAT WE DON{\textquoteright}T KNOW THE FUNCTION. THE STRUCTURE OF THE CONNECTIVE TISSUE IS BASED IN FIBRILS THAT FORM WEBS BUT NOT (HACES) ORGANIZED (DISORGANIZED) WHICH IS NOT SIMILAR TO ANYOTHER TYPE OF CONNECT FIBERS. WE HAVE FOUND A CELLULAR TYPE THAT IS STRONGLY ACIDOPHYLIC. THE GRANULOSE CELLS PRODUCE A SECRETION THAT AFTER A MODIFICATION OF THE MESOTHELIUM IS RELEASED TO THE COELOMIC CAVITY. THIS SUGGESTS A HORMONAL SECRETION. AS SAID BY HARMS{\textquoteright} THEORY (1921 IN HYMAN). THIS SAID THE NEPH MUST HAVE AN ENDOCRINE FUNCTION BECAUSE ITS EXTIRPAION KILLS THE WORM.(*LOGICAL?) THE WORKS OF DEJORGE 1969 IN 2 SPP OF S{\textquoteright}LUS SHOW LEVELS OF IODINE VERY HIGH IN NEPH.(AMOUNTS). THE FUNCTION OF THESE CELLS THEN WOULD NOT BE SIMILAR TO THE SUPRARENAL CAPSULES IN VERTS (HARMS) BUT WOULD BE RELATED TO THE METABOLISM OF IODINEPROTEINS.},
	pages = {21-40},
	keywords = {nephridia, ph. granulatum},
	author = {Ocharan, F. J.}
}
