Electronic Resource
Springer
Cell & tissue research
110 (1970), S. 204-218
ISSN:
1432-0878
Keywords:
Polychaetes
;
Parapodia
;
Glands
;
Fine structure
;
Mucus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The spiral organs of Nereis have been shown to be compound glands and not photoreceptors. The ducts of two or three types of secretory cells attach themselves in a serial manner to a spirally wound axial columella which lies just below the cuticle. The large intra-cellular ducts terminate in a number of fine ducts which penetrate the columella and open through it into the lumen of the gland. This communicates to the outside through a pore in the cuticle. The secretions are muco-polysaccharides which are probably mixed in the lumen before discharge.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00335526
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