[Spike activity of the pulmonary stretch receptors of cats with pneumothorax].
In 24 anesthetized and vagotomized cats, activity on high-threshold as well as 45% of low threshold and intermediate receptors during collapse of lungs either decreased essentially or stopped altogether. In other 55% of low-threshold and intermediate receptors the decrease of firing rate during expiration was either weak or absent, although a decrease in respiratory modulations of firing rate did occur. In great pneumothorax (100--120 ml) these receptors discharged evenly with the frequency 4 to 40/sec. The data obtained corroborate the hypothesis suggesting that the low-frequency impulse activity of the lung stretch receptors induces stimulation of inspiration and shortens the expiration.
D000818:Animals; D002415:Cats; D005652:Functional Residual Capacity; D008168:Lung / Q000294:innervation*; D008465:Mechanoreceptors / Q000502:physiology*; D011030:Pneumothorax / Q000503:physiopathology*; D012119:Respiration
Impul'snaia aktivnost' retseptorov rastiazheniia legkikh koshki pri pnevmotorakse.