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The snail extends the tentacles by internal pressure of body fluids, and retracts all four tentacles into the head by invagination when threatened or otherwise retreating into its shell. The mouth is located beneath the tentacles, and contains a chitinous radula with which the snail scrapes and manipulates food particles.
2 - olfactory epithelium 3 - corneal epithelium 4 - corneal endothelium 5 - retina 6 - layer with rod cells 7 - fibrous connective tissue layer 8 - nerve of the eye: Drawing of cross sections of the extracted tentacle (left) and constricted tentacle (right) with and eye of Helix pomatia. 1 - nerve of an eye 2 - 3 - 4 - eye 5 - tentacle ganglion ...
The upper pair of tentacles on the head of Helix pomatia have eye spots, but the main sensory organs of the snail are sensory receptors for olfaction, situated in the epithelium of the tentacles. Main articles: Sensory organs of gastropods and Nervous system of gastropods
The Ohio pebblesnail (Somatogyrus integra) is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae.
Glowing sea creature with 15 tentacles found off Florida coast. It’s a new species ‘Golden’-tailed creature — pregnant with 2 eggs — discovered as new species.
Pulmonate land snails usually have two sets of tentacles on their head: the upper pair have an eye at the end; the lower pair are for olfaction. [1]In anatomy, an eyestalk (sometimes spelled eye stalk and also known as an ommatophore) is a protrusion that extends an eye away from the body, giving the eye a better field of view. [1]
Here’s what the history detectives found out. J.J. Uplinger offers groceries, provisions and dry goods at his store in Munroe Falls circa 1900. The building still stands on state Route 91.
Officials conducting a secondary baggage screening found 90 Giant African Land Snails in the luggage of a passenger arriving from Ghana. According to a news release from CBP, there was a ...