google.com, pub-2260011659819468, DIRECT, f08c47fec0942fa0 Animals World: December 2010

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Sunday, December 26, 2010

Python Snake Wedge

A python snake with a length of two meter wedge under the car wheel in Sutrisno Street, Medan, North Sumatra, Wednesday (22/12) at night. This event also makes people excited because the snake evacuation process lasted a lot.



Hundreds of residents gathered beneath a car that contained a snake. It's not a criminal event that makes people excited, but there is a python stuck under car wheels. It was so hectic with people who come, the traffic also had jammed.

Suspected snake entered under the car while their owners tour to the waterfront Percut, Deli Serdang. Although every effort is made, the lack of equipment and the position of the snake is difficult to evacuate, about two hours being tried but failed. The owners then took the car to the car workshop to save the snake.

Sunday, December 19, 2010

Snails

Snails represent a large and varied group of shelled gastropod mollusks in the class Gastropoda. They are diverse in size and ecologically, being terrestrial freshwater or marine. One terrestrial species, Helix pomatia is the edible snail (escargot) familiar in French gourmet cooking.

Externally, snails are characterized spiral shell flattened foot, and anterior head with prominent tentacies. When disturbed, the snail can withdraw into its shell, and in some cases the shell opening can be closed by a horny, or calcareous, plate called an operculum. Locomotion in snails is usually achieved by means of waves of contraction along the bottom of the muscular foot from rear to front.

All snails undergo body torsion during development Snail begin development as bilaterally symmetrical animals. During the larval stage the visceral mass is twisted 180 degres, so that posterior structures such as the anus are thought to accompany body torsion. Several advantages are thought to accompany body torsion. First the shell opening is rotated anteriorally, and consequently the snail withdraws into the shell headfirst, and providing added protection for that end, which contains concentrated sensory structures and the major part of the central nervous system. In addition, the gills used for respiration (in most species) are rotated anteriorally, and the snail can utilize the undisturbed water ahead of its own path of movement for inhalant respiratory currents.