Biology

1995, Special Issue

N.A. Merkulova, A.N. Inyushkin

MODULATION OF THE INSPIRATORY-INHIBITING HERING-BREUER REFLEX BY NEUROPEPTIDES

To investigate the role of neuropeptides in the respiratory control, we microinjected tachykinins, opioids and TRH into the solitary tract nucleus in anaesthetized rats. Neuropeptides caused res¬piratory reactions and influenced on Hering-Breuer reflex. We suppose, that neuropeptides change sensitivity of the respiratory control system to the afferent input from slowly-adapting pulmonary stretch receptors.

O.A. Vedyasova

THE ELECTROPHYSIOLOGICAL ANALYSIS OF THE BRAIN CORTEX CONNETIONS WITH THE BILATERAL STRUCTURES OF THE RESPIRATIRY CENTRE IN CATS

The analysis of the evoked potentials of the respiratory and reticularis neurones of the medullary respiratory centre at the fronto- -orbital cortex stimulation was carried out in the acute experi¬ments in cats. It is concluded that the multisynaptic contralateral projections play the leading part in the synchronization of neuronal activity in the symmetrical respiratory centre formations.

N.M. Matveev, L.M. Kavelenova, N.V. Prohorova

SOME ENVIRONMENT BIOINDICATION PRINCIPLES IN STEPPE ZONE

It was showed that for soil state indication (on the acpects of fertility, moistening, sulphur and heavy metals pollution) A,L.Belgard ecomorphs system that was created for stppe zone conditions can be successfully used.