Page:Physiological Researches upon Life and Death.djvu/21

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ARTICLE X.
Of the influence which the death of the brain exercises on that of the lungs.
§ I. Inquiry whether the lungs cease to act directly by the death of the brain.—The brain does not directly influence the lungs.—Various experiments.—The agitation in the circulation and respiration produced by pain, does not prove a direct action of the brain on the lungs or heart.—Various considerations.—Conclusion, Page 257—265
§ II. Inquiry whether the lungs cease to act indirectly by the death of the brain.—The intercostals and diaphragm constitute the medium of death, when the brain ceases its action.—Different experiments.—Considerations on the connexion of cerebral action and respiration in a series of animals, 265—269
ARTICLE XI.
Of the influence which the death of the brain exercises on that of the heart.
§ I. Inquiry whether the heart ceases immediately to act by the interruption of cerebral action.—The brain has no immediate influence on the heart.—Observations and experiments in proof of this.—Effect of galvanism on the heart in animals with red and cold blood, and those with red and hot blood.—Conclusion, 270—278
§ II. Inquiry whether, in injuries of the brain, the death of the heart is produced by that of an intermediate organ.—The lungs are this intermediate organ.—Different experiments to establish this fact.—Consequence from these experiments.—Considerations on the connexion of the heart and brain in animals with cold blood, 278—282
ARTICLE XII.
Of the influence which the death of the brain exercises on that of all the organs.
The interruption of animal life is sudden and direct in the death of the brain, 282—293
§ I. Inquiry whether the interruption of organic functions is a direct effect of the cessation of cerebral action.—The brain does not directly influence organic functions.—Observations and experiments to prove this fact.—Considerations on the ganglions and great sympathetic.—Galvanic experiments.—Conclusion, 283—293
§ II. Inquiry whether the interruption of organic functions is an indirect effect of the cessation of cerebral action.—Intermediate organs whose death brings on the cessation of organic functions, when the cerebral action is interrupted.—Succession of phenomena.—Analogy between asphixia and the death which commences by the brain.—Considerations on the connexion of the brain and organs in animals with cold blood, 293—297