usta

usta

Front opening of the digestive tract, into which food is taken for digestion. In flatworms, the mouth is the only opening into the digestive cavity, and is located on the "belly" of the worm.

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Fagområde/Domene Biology
Category: Zoology
Company: Berkeley
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Information about products and services conveyed from one individual to another.

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In aquatic animals, highly vascularized tissues with large surface area; these are extended out of the body and into the surrounding water for gas exchange.

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A category in the classification of plants and animals between species and family; genera- pl.

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Collection of nerve cells usually located at the anterior end of an animal, when present at all. The nerves coordinate information gathered by sense organs, locomotion, and most ...

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Fluid which circulates throughout the body of an animal, distributing nutrients, and often oxygen as well.

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End of the digestive tract, or gut, through which waste products of digestion are excreted, as distinct from the mouth.

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Region of the body furthest from the mouth. In insects, the third body region behind the head and thorax.

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