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Genital Pore

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genital pore [′jen·ət·əl ′pȯr]
(invertebrate zoology)
A small opening on the side of the head in some gastropods through which the penis is protruded. Also known as genital orifice.

Genital Pore 

a paired or unpaired opening in cyclostomes and some bony fishes that connects the body cavity to the environment and that serves to eliminate eggs and sperm. Genital pores are found in cyclostomes of both sexes; they open into the urogenital sinus (lampreys, Bdellostoma) or into the cloaca (hagfishes). Genital pores are not paired in many eels or in several teleosts, including salmon. In these fishes only females have a single genital pore, which is usually situated behind the anal opening.



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Sagittal sections of the genital pore region of worms in Brazilian patients showed the cirrus sac lying horizontally with the seminal vesicle lying dorsocaudal to it, as described by Dick et el.
However, the spines around the periphery of the genital pore and the rim of the oral sucker were sharply-attenuated.
 
 
 
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