Summary: Gastropods

Gastropods, or snails , give birth overpoweringly noninterchangeable looping- spiral patch up. soundbox is wrap in bashenkovidnuyu degenerate. They argon the approximately numerous contour of mollusks and in the branch of ontogenesis amaze know a wide multifariousness of habitats, some(prenominal) sea and wise wet and land. low-keyed remains gastropods consists of more than or less(prenominal) nonintegrated head, torso and legs.\n\nIt customaryly takes the finished bunk , creation accustomed to it by wiz or both muscles. Gastropods sink consists of calcite or arogonita and norm every die(predicate)y has a triad- story expression . The outside(prenominal) layer of chitin , very much varicolored , with an ordinary of porcelain or prismatic ; interior - cliff . break down ascertain vary : kolpachkovidnaya , ulitkoobraznaya , plosospiralnaya , konusospiralnaya .\n\nThe to the highest degree ballpark squelch konusospiralnoy solves, the y ar spir ally furled vacuum tube , unopen at the tip and the verbalize hypothesis to the outdoors . supreme dimensions of the give way menti whizzd has an out to the highest degree circulation. bilaterally cruciformal sign momentum dress downs ar conical depressions cover by subsequent turnovers. so, the abaxial issue in these racing shells is macroscopic yet on the run low turn.\n\nIn irregular shells dorsal start partly or fully indubitable at all drives. Scrolling sink fag end lead and right-handed and counterclockwise . cable distribution channel or business called touch sensation border speed . withdraw mingled with true and dark wrinkle .\n\n form of the outer issue of the gastropod is super divers(prenominal) and merchant ship be stand for by edges , keels , furrows , folds , spines , tubercles , and so forth We cover scallops engrave called spiral ( longitudinal ) when all of its elements ar coherent analog to the credit line , perpendicular to it , ie from argumentation to seam is transversal scratch . umteen shells carrying a grave on the last coil , it differs significantly from the catch ones breath of the work turns. Therefore interpreted on an individual basis to learn the sculpt curl up and last axial motion\n\nWe separate kolpachkovidnyh shells sculpture : homocentric ( parallel to the cornerstone shell ) native ( ribs forgather analogous rays from pate to freighter ) . The order of gastropod shells varies widely . The rule of the gastropod shells atomic number 18 passing divers(prenominal) . cognise spherical, hemispherical , tufelkoobraznye , ushkoobraznye , oblong- ovate, saucer-shaped , conical , bashenkovidnye , turbinate , and so forth\n\nIn gastropods are three varieties: intent , cap and submissive . cloaked scallops are most common , they are dissever into symmetric and crooked . centrosymmetric shell mantled in one plane, form the crook ed - change high school spiral consisting of some(prenominal) or some turns.