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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 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.
Freshwater snails are commonly found in aquaria along with tropical fish. Species available vary in different parts of the world. In the United States, commonly available species include ramshorn snails such as Planorbella duryi , bladder snails such as Physella acuta , apple snails such as Pomacea bridgesii , the high-spired thiarid Malaysian ...
The anatomy of a common air-breathing land snail: much of this anatomy does not apply to gastropods in other clades or groups. Snails are distinguished by an anatomical process known as torsion, where the visceral mass of the animal rotates 180° to one side during development, such that the anus is situated more or less above the head. This ...
The environmental agency has been working since 2015 to find invasive carp in new areas of the Ohio River Basin. Taylorsville Lake was chosen for testing since it is an important fishery resource ...
Ohio is reeling in an official state fish, the walleye.. During a marathon session on June 26 before legislators break for the summer, the Ohio House approved H.B. 599, naming the walleye Ohio's ...
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.
Here's a list of the state records for Ohio's biggest fish ever caught. ... Lake Erie. Randy Van Dam of Kalamazoo, Michigan, on June 16, 1993. Bass, spotted: 5.25 pounds. 21 inches. Lake White.