Results 141 to 150 of about 2,342 (189)

Dissection of a Snail (Helix pomatia)

2016
Availability: Roman snails (Helix pomatia) like places which are dark and damp. In spring and autumn, they are most active and easy to collect. When it’s dry or cold, they seal themselves up; they hibernate in winter and aestivate in summer. During these periods giant Ghana snail (Achatina sp.) can be purchased from zoos instead.
Péter Lőw, Kinga Molnár, György Kriska   +2 more
openaire   +1 more source

K + Channels in Cardiomyocytes of the Pulmonate Snail Helix

Journal of Membrane Biology, 2004
We used the patch-clamp technique to identify and characterize the electrophysiological, biophysical, and pharmacological properties of K(+) channels in enzymatically dissociated ventricular cells of the land pulmonate snail Helix. The family of outward K(+) currents started to activate at -30 mV and the activation was faster at more depolarized ...
S A, Kodirov, V L, Zhuravlev, V K, Pavlenko, T A, Safonova, J, Brachmann   +4 more
openaire   +2 more sources

Channels activated by stretch in neurons of a helix snail

Canadian Journal of Physiology and Pharmacology, 1992
Single-channel recordings from central neurons of the helix snail, Cepaea nemoralis, revealed two types of channels that could be activated by stretch (i.e., by the membrane deformation produced when suction is applied to the patch pipette). One, a K+ channel (58 pS in physiological solution), was evident in excised and cell-attached patches.
E, Bédard, C E, Morris
openaire   +2 more sources

CO2 chemoreception in the pulmonate snail, Helix aspersa

Respiration Physiology, 1993
We have studied the response of the pneumostome to CO2, O2 and combined CO2 and O2 in intact snails. We found that pneumostomal opening increases in response to both hypercapnia and mild hypoxia. We determined which neural structures were essential for the pneumostomal response to CO2 by eliminating parts of the nervous system: the subesophageal ...
J S, Erlichman, J C, Leiter
openaire   +2 more sources

The effects of drugs on the neurones of the snail Helix aspersa

Comparative Biochemistry and Physiology, 1961
Abstract 1. (1) The effect of adding various chemicals to the isolated brain of the snail Helix aspersa is described. The reactions were followed by measuring the effect of the chemicals on the resting potential and the spontaneous action potentials of the nerve cells. 2.
G A, KERKUT, R J, WALKER
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The pharmacology of helix dopamine receptor of specific neurones in the snail, helix aspersa

Comparative Biochemistry and Physiology, 1968
Abstract 1. 1. Dopamine was found to hyperpolarize and inhibit the spontaneous activity of certain Helix neurones. 2. 2. The inhibitory effect of dopamine was antagonized by ergometrine, ergotamine, ergotoxine, dibenyline, rogitine and yohimbine. 3. 3.
R J, Walker, G N, Woodruff, B, Glaizner, C B, Sedden, G A, Kerkut   +4 more
openaire   +2 more sources

Surfactant in the Gas Mantle of the SnailHelix aspersa

Physiological and Biochemical Zoology, 1999
Surfactant occurs in cyclically inflating and deflating, gas-holding structures of vertebrates to reduce the surface tension of the inner fluid lining, thereby preventing collapse and decreasing the work of inflation. Here we determined the presence of surfactant in material lavaged from the airspace in the gas mantle of the pulmonate snail Helix ...
Daniels, Christopher B., Wood, Philip G., Lopatko, Olga V., Codd, Jonathan R.; id_orcid 0000-0003-0211-1786, Johnston, Sonya D., Orgeig, Sandra   +5 more
openaire   +3 more sources

Buffers in the blood of the snail,helix pomatia L.

Comparative Biochemistry and Physiology, 1969
Abstract 1. 1. Blood from the haemocoels of active snails had an average pH of 7·76. In aestivating snails, it tended to contain less bicarbonate to have a higher pCO2, so being more acid (mean: pH 7·51). 2. 2. Blood from the heart was 0·12 pH units more alkaline. 3. 3. The pH of maximum buffering by haemocyanin is lowered in the presence
openaire   +2 more sources

Neuroendocrine complexes in the gut of the snail Helix aspersa

Journal of Morphology, 1989
AbstractTo our knowledge, this paper presents the first description of neuroendocrine complexes in invertebrates. Neuroendocrine complexes have been identified in the lamina propria of the snail gut by light microscopy using Giemsa‐stained, deplasticized sections and by electron microscopy.
Y, Alba, A C, Villaro, P, Sesma, J J, Vázquez   +3 more
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“Central arousal” and sexual responsiveness in the snail, Helix aspersa

Behavioral and Neural Biology, 1991
In molluscs, a "central arousal" system is thought to positively modulate both an animal's level of activity and its behavioral responsiveness. This hypothesis is examined in Helix aspersa by testing the relationships between activity, feeding, and sexual behavior. Activity, feeding, and mating exhibit parallel daily rhythms.
S A, Adamo, R, Chase
openaire   +2 more sources