pneumostome


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pneumostome

[′nü·mə‚stōm]
(invertebrate zoology)
The respiratory aperture of gastropod mollusks.
References in periodicals archive ?
This contrasts markedly with the situation in Nata (and several Australasian genera) where the genital pore lies below the pneumostome.
Association with the lung floor and pneumostome (Figs 2A, 2C)
cross laterally over the floor of the lung cavity towards the left at approximately the level of the anterior corner of the pneumostome (Fig.
The anterior corner of the pneumostome together with the lung floor are of particular interest because three different bands of muscle fibres converge there, one from above and two from below.
The team trained the snails to remember to keep their pneumostomes closed when oxygen levels were low by poking them with a stick every time they tried to open their pneumostomes.
Testing the snails in de-oxygenated pond water 24 hours later, the team were surprised to see that the snails seemed to have no recollection of their training, popping their pneumostomes above the water's surface.