A text-book of physiology, for medical students and physicians . Fig. 2nii —Diagram to show the locationof the cisternse and canals of the subarach-noidal space.—(Poirier and Charpy.). I i;-. 251 Schema to haw the relations f the Pacchionian bodies to the sinuses:d, d, I ii i the dura mater, inclosing a sinus between them J ?>>.. the pia mater; I-, the Pacchionian body asa projection i the arachnoid into the blood sinu , present normally is difficult bo determine. Various figures havebeen given, but il is usually stated to amount to 60 t 80 <•.<•. If VASOMOTOR SUPPLY OF THE ORGANS.
A text-book of physiology, for medical students and physicians . Fig. 2nii —Diagram to show the locationof the cisternse and canals of the subarach-noidal space.—(Poirier and Charpy.). I i;-. 251 Schema to haw the relations f the Pacchionian bodies to the sinuses:d, d, I ii i the dura mater, inclosing a sinus between them J ?>>.. the pia mater; I-, the Pacchionian body asa projection i the arachnoid into the blood sinu , present normally is difficult bo determine. Various figures havebeen given, but il is usually stated to amount to 60 t 80 <•.<•. If VASOMOTOR SUPPLY OF THE ORGANS. 607 these figures are correct it evidently does not form a thick envelopeto the nervous system. Under abnormal conditions (hydroceph-alus, etc.) the quantity may be greatly increased. It is physio-logically interesting to find that this liquid may be formed verypromptly from the blood and, when in excess, be absorbed quicklyby the blood. In fractures of the base of the skull, for instance,the liquid has been observed to drain off steadily at the rate of or more per day. On the othe
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