. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. ADAPTATIONS IN WABM-BLOODBD ANIMALS 155 In birds the teeth are replaced by horny sheaths, the mastication of the food being provided for by a thick walled portion of the digestive tract called the Fig. 55 — Skulls, stowing teeth ; A, monkey ; B, horse, a grass eater (note number of molars); C, dog, a flesh eater (note the prominent canines); D, rodent, a, gnawer (note the prominent incisors). While the other parts of the digestive tract are, in general, similar to that in man, the stomachs of the vario
. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. ADAPTATIONS IN WABM-BLOODBD ANIMALS 155 In birds the teeth are replaced by horny sheaths, the mastication of the food being provided for by a thick walled portion of the digestive tract called the Fig. 55 — Skulls, stowing teeth ; A, monkey ; B, horse, a grass eater (note number of molars); C, dog, a flesh eater (note the prominent canines); D, rodent, a, gnawer (note the prominent incisors). While the other parts of the digestive tract are, in general, similar to that in man, the stomachs of the various forms show interesting modifications. The stomach of the rabbit and other rodents, and of the carnivora, is almost identical with that of man. The birds show a curious adaptation to compensate for the lack of teeth and the uncertainty of food supply. In these animals the stom- ach is in three parts. First, at the base of the gullet is a sac called the crop in which the food may be stored. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eddy, Walter Hollis, b. 1877. New York, Cincinnati [etc. ] American book Co
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectanatomy
