. Advanced lessons in practical physiology for students of medicine. Physiology. 118 ADVANCED LESSONS IN PRACTICAL PHYSIOLOGY sympathetic nerve contains certain fibers which innervate the radial muscle cells of the iris, its excitation must give rise to an increase in the size of the pupil. Consequently, if any doubt exists as to the character of the nerve isolated, this reaction may be employed to make sure that it is the Fig. 76.—The Vasomotor Reaction in the Ear of the Rabbit on Division and Stimulation of the Cervical Sympathetic Nerve. A, Normal. B, After division of the cer
. Advanced lessons in practical physiology for students of medicine. Physiology. 118 ADVANCED LESSONS IN PRACTICAL PHYSIOLOGY sympathetic nerve contains certain fibers which innervate the radial muscle cells of the iris, its excitation must give rise to an increase in the size of the pupil. Consequently, if any doubt exists as to the character of the nerve isolated, this reaction may be employed to make sure that it is the Fig. 76.—The Vasomotor Reaction in the Ear of the Rabbit on Division and Stimulation of the Cervical Sympathetic Nerve. A, Normal. B, After division of the cervical sympathetic nerve. C, On stimulation of the distal end of the divided cervical sympathetic nerve. 2. The Depressor Nerve.—Insert a straight cannula in the left common carotid artery and connect it with the mercury manometer. Place the depressor nerve in shielded electrodes, and arrange the electric apparatus for stimulation with a quicklj^ interrupted current of mod-. 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 Burton-Opitz, Russell, b. 1875. Philadelphia, London, W. B. Saunders Company
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