. Animal activities : a first book in zoölogy. Zoology; Animal behavior. i84 ANIMAL ACTIVITIES. The adult frog pumps the air into the lungs by the movements of the muscles of the throat and lower part of the mouth-cavity. When the mouth-cavity enlarges, air rushes in through the nostrils. When the cavity contracts, valves close the openings to the nostrils and the air is forced down into the lungs. The frog has. Fig. 140.—Blood-corpuscles of Man. j, r', r", red corpuscles ; p and g, white corpuscles; c^ crystals. neither ribs nor diaphragm—organs of great importance in our own breathing.
. Animal activities : a first book in zoölogy. Zoology; Animal behavior. i84 ANIMAL ACTIVITIES. The adult frog pumps the air into the lungs by the movements of the muscles of the throat and lower part of the mouth-cavity. When the mouth-cavity enlarges, air rushes in through the nostrils. When the cavity contracts, valves close the openings to the nostrils and the air is forced down into the lungs. The frog has. Fig. 140.—Blood-corpuscles of Man. j, r', r", red corpuscles ; p and g, white corpuscles; c^ crystals. neither ribs nor diaphragm—organs of great importance in our own breathing. The oxygen, once taken by the blood, is carried by the red corpuscles, or blood-cells, to all parts of the body, where in the capillaries it is given up to burn, or oxidize, tissues and food substances in order to produce heat and energy. Nutrition. Food passes from the mouth to the stomach, where it is acted on by fluids like those in our own bodies. It then passes to the intestines, where the bile secreted by the large liver and the pancreatic. 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 French, Nathaniel S. (Nathaniel Stowers), 1854-. New York ; London : Longmans, Green, and Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecta, booksubjectzoology
