[New morphologico-functional concepts of sensory structures].
The author analyzes the terminology of sensory nerve structures serving mechanoreception, nociception, thermoreception, chemoreception and baroreception which is not only very varied but also inaccurate, as it reflected so far only some morphological or functional phenomena. The author considers particularly inapt to use the term "receptor" for so-called nerve endings, as at present the term receptor stands for the specific binding capacity of protein molecules in particular in cell membranes, the transmission of information into the cell and evoking of a biological response. From the aspect of the contemporary concept the so-called nerve endings must be considered systems formed by a different number of sub-systems which participate in a certain way in the activity of the structure as a whole. This system is formed by the dendritic zone with the ability to form a generating potential, by modified Schwann cells, Grandry's on Merkel's modified fibrocytes, in corpuscles by fluid, a system of cellular lamellae and microfibrils and in Pacini's corpuscles also by a network of capillaries. Every sensory structure is associated metabolically with surrounding tissue. The author defines sensitive nervous formations as basic special sensory systems which serve the receipt of information and their transmission to the CNS and complex sensitive nervous formations which are systems of a higher order with an adaptive graded sensitivity. The author submits then his own classification of sensory nervous formations which respects morphological and functional phenomena which can be essentially summarized in two basic and one transient class.
Malinovský
L
L
Anatomický ústav lékarské fakulty Masarykovy univerzity, Brno.
D000818:Animals; D006801:Humans; D011984:Sensory Receptor Cells / Q000033:anatomy & histology / Q000502:physiology*
Nové morfologicko-funkcní pojetí senzitivních struktur.