[Kinetics of the structure of neurites in mollusk brain after its dissociation].

Using phase microscopy the behaviour of living neurons directly after their enzymatic isolation from ganglia of Clione limacina and Lymnaea stagnalis was studied. Apart from single-processed unipolar neurons, numerous dipolar and unipolar ones were found in mollusc which does not conform to neuron classification generally adopted. Disrupted neurons were seen to shorten gradually in Ringer solution and -1640 medium at the rate of 0.

[Manifestations of the mobility of sensory neurons of the spinal ganglion after stimulation of its peripheral receptors].

The body of sensory neurons in the frog spinal ganglion++ possesses an active mobility. This is demonstrated as pulsation and changes in its form. The mobility is closely connected with electrogenesis of cells.

[Morphological changes in the electrically inactive afferent myelinated nerve fibers of the live clustered neuroreceptor].

At attempt has been made to determine morphological criterium of active and inactive alive afferent myelin fibers. Applying electrophysiological control, external diameters in the area of maximal dilatation of the myelin fiber are compared with the neighbouring maximal narrowing of the unmyelinated preterminal. The dilatation coefficient, suggested by the authors of mathematical models of the nervous fiber is taken as the base of estimation.

[Effect of acetylcholine on the structuro-functional characteristics of bush-like interoceptors of the urinary bladder of the frog].

In the preparation of the frog (Rana temporaria) isolated urinary bladder, it has been stated by morphological and physiological experiments that under an exogenic acetilcholine influence certain structural-functional changes take place in the bushy interoceptor. They are manifested as a sharp deterioration in coloration the receptor with methylene blue, the receptory plates decrease in their size, character of granuloformation changes in them. Simultaneously, an increased electrical activity is observed and, on the contrary, under the influence of atropine the impulse activity drops.

[Modality of the bush-like receptors].

In an isolated preparation of the Rana temporaria urinary bladder after a simultaneous morphological and physiological investigation a, structural-functional differentiation of free bushy receptors has been demonstrated. According to arborization character and to the appearance of deferent fibers, the receptors are divided into two types. The first type receptors have a simple structure, a long deferent poorly branching myelin fiber, terminating in a diffuse bush near blood vessels.