The experiments performed on rabbits have shown that with the inhalation of various gas mixtures the impulse activity of cardiovascular neurons in bulbar cardiovascular centre is changed. The most active are inserted cardiovascular neurons that are highly sensitive to O2 shortage and CO2 excess. It is believed that the experiments on Hering nerve severing indicate the possible development of reflex effects on hemodynamics during changes in inhaled gas composition produced from sinocarotid reflexogenic zone not only through bulbar respiratory neurons, but also through a system of inserted neurons of bulbar cardiovascular centre.
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