pneumostome


Also found in: Dictionary, Encyclopedia, Wikipedia.

pneumostome

a small aperture allowing the passage of air, such as that leading into the respiratory cavity of snails.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
In these tests, LTM is operationally defined as there being significantly fewer attempted pneumostome openings in the MT compared to TSl.
A TS consists of applying a tactile stimulus with a sharpened wooden applicator to the pneumostome area as it begins to open (i.e., an attempted pneumostome opening).
This contrasts markedly with the situation in Nata (and several Australasian genera) where the genital pore lies below the pneumostome. The genital atrium is simple and apically receives the openings of the penis base and vagina.
than identified by Harry and Hubendick (1964), they are described in terms of their association with (i) the upper portion of neck and head, (ii) the lung floor and pneumostome and (iii) the columellar muscle.
Association with the lung floor and pneumostome (Figs 2A, 2C)
According to Lukowiak, the molluscs can be trained to remember a simple activity: to keep their breathing tubes (pneumostomes) closed when immersed in deoxygenated water.
Lymnaea hold memories about when to breathe through their breathing tubes (pneumostomes) in a three neuron network, which is much simpler than the colossal circuits that hold our memories.