Responses of single receptor units of the rat mammary gland parenchyma to tactile stimulation.

Slowly adapting mechanoreceptor units with regular and irregular discharges were found in the mammary gland parenchyma. The receptive fields of both types of receptor units had a diameter of 1-1.5 mm.

[Effect of inhibitors of the active transport of ions on the spontaneous and evoked electrical activity of parenchymal mammary gland receptors].

In the potassium-free saline spontaneous activity of the mammary gland parenchyma receptor increased within first 30--40 min., then decreased and, finally, ceased. Sensitivity of the receptor to the mechanical stimuli decreased gradually.

[Responses of individual receptor units of rat mammary gland parenchyma to tactile stimulation].

Two types of slowly adapting mechanosensitive units were revealed in the parenchyma of the rat mammary gland (SAI and SAII). At constant mechanical displacement of the parenchyma surface SAI exhibited irregular and SAII--regular firing. The diameter of the receptive fields of the SAI and SAII was 1.