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Aristotle's lantern in a sea urchin, viewed in lateral section. The mouth of most sea urchins is made up of five calcium carbonate teeth or plates, with a fleshy, tongue-like structure within. The entire chewing organ is known as Aristotle's lantern from Aristotle's description in his History of Animals (translated by D'Arcy Thompson):
Aristotle's hand has a warm color when it touches the bust of Homer, which implies a special bond Aristotle feels with Homer. [10] While the bust of Homer seems more visible than Alexander's chain, Rembrandt makes the chain seem as if it were protruding from the frame, thus giving it as much prominence as the bust.
Embedded in the peristome are five calcareous "teeth" collectively known as Aristotle's lantern. These are used for grinding the flower urchin's food. The anus is situated on the upper (aboral) surface of the test, directly opposite the mouth. Like the mouth, it is surrounded by a ring of small plates known as the periproct.
Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".
1. “Knowing yourself is the beginning of all wisdom.” 2. “Educating the mind without educating the heart is no education at all.” 3. “Excellence is never an accident.
Regular screenings for high blood pressure can help determine whether you’re at risk of health issues such as heart disease and stroke. A stroke, for example, can cause serious brain damage. If ...
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The experience had been destroyed. I felt that something had been carved out of the heart of my childhood. I just felt, like a lot of us did, kind of abused by the relationship to the team. You ...