Cerebral circulation under reflex influences
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Changes of the blood velocity in the dura and pia mater of the brain and in the hypothalamus region in the case of the inflation of the small intestine loop have been analyzed by the application of the thermoelectrical method on 34 dogs under morphine-urethane anesthesia.
In the majority of the experiments the stimulation of the interoceptors of the small intestine beings a bonn the increase of the blood circulation in the brain with synchronous rise of the arterial pressure; in other cases under the same rise of the arterial pressure the decrease of blood circulation, or a biphasic response, i.e., the original increase followed by the decrease of blood circulation is observed. Such different responses of the blood vessels of the brain and the interoceptors being stimulated is connected with the different tonus of the blood vessels of the brain at the moment of stimulation.
KeywordsPublic Health Blood Vessel Small Intestine Arterial Pressure Dura
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