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Gut churning Black & White Stock Photos

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. Principles of modern biology. Biology. PARENCHYMA (MESODERM) which illustrates the advantages of such a system. Annelida, like higher forms gener- ally, have developed a sharply defined coelo- mic cavity, which intervenes between the wall of the digestive tract and the body wall (Fig. 16-10). Moreover, the gut wall has developed a separate musculature, so that the digestive movements of the animal are independent of its external movements. The gut muscula- ture takes care of churning, mixing, and moving the food mass in the digestive tract, while simultaneously the muscles of the body wall a Stock Photo
RMRDYTTF–. Principles of modern biology. Biology. PARENCHYMA (MESODERM) which illustrates the advantages of such a system. Annelida, like higher forms gener- ally, have developed a sharply defined coelo- mic cavity, which intervenes between the wall of the digestive tract and the body wall (Fig. 16-10). Moreover, the gut wall has developed a separate musculature, so that the digestive movements of the animal are independent of its external movements. The gut muscula- ture takes care of churning, mixing, and moving the food mass in the digestive tract, while simultaneously the muscles of the body wall a
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