On the influence of mechanical and physiological rest in the treatment of accidents and surgical diseases, and the diagnostic value of pain : a course of lectures, delivered at the Royal College of Surgeons of England, in the years 1860, 1861, and 1862 / by John Hilton.

  • Hilton, John, 1804-1878.
Date:
1863
Catalogue details

Licence: Public Domain Mark

Credit: On the influence of mechanical and physiological rest in the treatment of accidents and surgical diseases, and the diagnostic value of pain : a course of lectures, delivered at the Royal College of Surgeons of England, in the years 1860, 1861, and 1862 / by John Hilton. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    This increase in dimension of the parts forming the floor of the lateral ventricles is permitted, however, towards the interior of the ventricles, by the cerebro-spinal fluid receding through the foramina of Monro, third ventricle, aqueduct of Sylvius, and fourth ventricle, and thence through the cerebro-spinal opening in the lower part of the fourth ventricle to the base of the brain or subcerebral spaces, and so into the vertebral canal. As the local hyper- emia of the blood-vessels in the interior of the organs, the thalamus, corpus striatum, &c. subsides, the cerebro-spinal fluid rises into the ventricles, and makes a properly adapted pressure upon the corpus striatum and thalamus, reducing them to their size of inactivity, and sustaining them in a state of rest. Properly adapted pressure is that of the circulation minus the local effect of physiological exci- tation in the part actively employed; the cerebro-spinal fluid in this respect serving the analogous purpose of the elastic capsule of the liver, kidney, and spleen. These sketches, copied from drawings made from nature, are introduced for the purpose of showing the position in the human brain of the cerebro-spinal opening, through which the cerebro-spinal fluid passes to and from the interior of the brain. The size and outline of the cerebro-spinal opening varies in different brains. a, Posterior and inferior part of the cerebellum overlying the medulla oblongata. b, Upper and posterior part of the medulla oblongata. e, Cerebro-spinal opening for the transmission of the cerebro-spinal fluid. C