Adductor sentence example

adductor
  • This columella muscle is the same thing as the muscles adhering to the shell in Patella, and the posterior adductor of Lamellibranchs.
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  • The heart and pericardial chamber in the oyster lie along the anterior face of the adductor muscle, almost perpendicular to the direction of the gills, with which in Anodon they are parallel.
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  • The bivalved carapace has a jointed rostrum, and covers only the front part of the body, to which it is only attached quite in front, the valve-like sides being under control of an adductor muscle.
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  • It is the approximate equality in the size of the anterior and posterior adductor muscles which led to the name Isomya for the group to which Anodonta belongs.
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  • The hinder adductor muscle is always large in Lamellibranchs, but the anterior adductor may be very small (Heteromya), or absent altogether (Monomya).
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  • The former classification based on these differences in the adductor muscles is now abandoned, having proved to be an unnatural one.
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  • In fact all Lamellibranchs begin with a condition in which there is only one adductor, and that not the posterior but the anterior.
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  • Then the posterior adductor develops, and becomes equal to the anterior, and finally in some cases the anterior becomes smaller or disappears.
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  • The single adductor muscle of the Monomya is separated by a difference of fibre into two portions, but neither of these can be regarded as possibly representing the anterior adductor of the other Lamellibranchs.
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  • The adductor muscles placed in the concavity of the shells act upon the long arms of the lever at a mechanical advantage; their contraction keeps the shells shut, and stretches the ligament or spring h.
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  • Each nephridium in the oyster is a pyriform sac, which communicates by a narrow canal with the urino-genital groove placed to the front of the great adductor muscle; by a second narrow canal it communicates with the pericardium.
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  • This byssus is not homologous with that of other Lamellibranchs, but originates from a single glandular epithelial cell embedded in the tissues on the dorsal anterior side of the adductor muscle.
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  • It remains in this condition for a period of two to six weeks, and during this time the permanent organs are developed from the cells of two symmetrical cavities behind the adductor muscle.
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  • The glochidium is formed by the precocious development of the anterior adductor and the retardation of all the other organs except the shell.
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  • The Pseudolamellibranchia included the oyster, scallop and their allies which formerly constituted the order Monomyaria, having only a single large adductor muscle or in addition a very small anterior adductor.
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  • Modiolopsidae.-Extinct; Silurian to Cretaceous; adductor muscles sub-equal.
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  • Pernidae.-Shell very inequilateral; ligament subdivided; mantle open throughout; anterior adductor absent.
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  • Megalodontidae.-Shell 1a, tr, Upper and lower inequilateral, thick; posterior siphons adductor impression on a myo ms, Siphonal muscle of the phorous apophysis.
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  • Tridacnidae.-Mantle closed to a considerable extent; apertures distant from each other; no siphons; a single adductor; shell thick.
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  • - Shell thin, gaping widely at the posterior end; anterior adductor much reduced; mantle extensively closed; siphons long, united.
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  • The valves of the shell are closed by a single large adductor muscle, the anterior adductor being absent.
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  • The organization of the oyster, as compared with that of a typical lamellibranch such as Anodon, is brought about by the reduction of the anterior part of the body accompanying the loss of the anterior adductor, and the enlargement of the posterior region.
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  • The fresh-water Mussels, Anodonta cygnea, Unio pictorum, and Unio margaritiferus belong to the order Eulamellibranchia of Lamellibranch Molluscs, in which the anterior and posterior adductor muscles are equally developed.
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  • However at present we have no reliable test to exclude interposition of the adductor aponeurosis.
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  • The edible part of the scallop is the pale adductor muscle and orange roe (coral ).
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  • The organization of the oyster, as compared with that of a typical lamellibranch such as Anodon (see Lamellibranchia), is brought about by the reduction of the anterior part of the body accompanying the loss of the anterior adductor, and the enlargement of the posterior region.
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  • The edible part of the scallop is the pale adductor muscle and orange roe (coral).
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  • Depending upon your hormonal makeup, performing extra side leg raises might build the adductor muscles, thereby making your legs look bigger.
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  • As such, the machine can also tone the abductor and adductor muscles, otherwise known as the inner and outer thighs.
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  • Your aim will be to work the abductor and adductor muscles.
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  • The last two families are dimyarian, with small anterior adductor.
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