. Animal and vegetable physiology, considered with reference to natural theology. Biology; Physiology; Plant physiology; Natural theology. COMPLEX APPARATUS FOR NUTRITION. SI uniform distribution of the nutritious fluids elaborated by the organs of digestion. This separation of functions, again, leads to the introduction of another system of canals or ves- sels, for transmitting the fluids from the organs which pre- pare them to the heart, as into a general reservoir. In the higher orders of the animal kingdom, all these processes are again subdivided and varied, according to the species of fo
. Animal and vegetable physiology, considered with reference to natural theology. Biology; Physiology; Plant physiology; Natural theology. COMPLEX APPARATUS FOR NUTRITION. SI uniform distribution of the nutritious fluids elaborated by the organs of digestion. This separation of functions, again, leads to the introduction of another system of canals or ves- sels, for transmitting the fluids from the organs which pre- pare them to the heart, as into a general reservoir. In the higher orders of the animal kingdom, all these processes are again subdivided and varied, according to the species of food, the habits and mode of life, assigned by nature to each in- dividual species. For the purpose of conveying clearer no- tions of the arrangement of this extensive system of vital organs, I have drawn the annexed plan (Fig. 265,) which. ^ • exhibits them in their natural order of connexion, and as they might be supposed to appear in a side view of the in- terior of a quadruped. To this diagram I shall make fre- quent reference in the following description of this sys- tem. The food is, in the first place, prepared for digestion by several mechanical operations, which loosen its texture and destroy its cohesion. It is torn asunder and broken down by the action of the jaws and of the teeth; and it is, at the same time, softened by an admixture with the fluid secre- tions of the mouth. It is then collected into a mass, by the action of the muscles of the cheek and tongue, and swal- VOL. II. II. 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 Roget, Peter Mark, 1779-1869. Philadelphia, Carey, Lea & Blanchard
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