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English: Heart diagram with labels in English. Blue components indicate de-oxygenated blood pathways and red components indicate oxygenated blood pathways. [1] [2]
Diagram of the human heart, created by Wapcaplet in Sodipodi. Cropped by ~~~ to remove white space (this cropping is not the same as Wapcaplet's original crop). == See also == * Image:Diagram of the human heart.svg - original
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The heart of fish is therefore only a single pump (consisting of two chambers). Fish have a closed-loop circulatory system. The heart pumps the blood in a single loop throughout the body. In most fish, the heart consists of four parts, including two chambers and an entrance and exit. [20]
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The herring has been of historical importance for the Swedish economy and food since the Middle Ages. It is still the most economically important Swedish fish. The catch of herring in Swedish waters in 1996 was 132,153 tonnes, of which 74,293 tonnes became fish meal and 57,860 tonnes was sold to consumers. [8]
A venous heart is the type of heart in which only blood with CO₂ circulates. Venous hearts receive blood from veins and pumps it for oxygenation. This type of heart is generally found in fishes. Its also known as the original heart and every other heart evolved from it, it has a accessory chamber where both oxygenated and deoxygenated blood ...