Porucha funkce autonomního nervového systému (ANS) způsobená chronickým stresem je velmi pravděpodobně jedním z hlavních patofyziologických mechanizmů vzniku a progrese esenciální hypertenze, zejména u mladších hypertoniků. Závažnost dysfunkce lze hodnotit pomocí jednoduchých testů, jakým je například měření klidové srdeční frekvence. Betablokátory jsou nejúčinnější skupinou pro chronickou léčbu nadměrné aktivity sympatiku., Miroslav Souček, J. Nevrlka, I. Řiháček, and Lit. 26
The structuralistic point of view seems to be applicable in the sociolinguistics as far as the relation of language norms and varieties is concerned. Language norms can be classifiable as components of human consciousness, the function of which is to regulate language expectations and actions. These norms reflect social and language phenomena. Varieties are coherent collections of language elements which can be distributed according to geographic, social or functional criteria. The relation between norms and varieties is that between invariant and variant elements. These units facilitate to operationalize the sociolin-guistic perception of language-users. Invariant constructs with their sociolinguistic relevance (segments of norms) are realizable in various ways, which depends on various factors determining communicative situations. The author suggests to coin the term normeme for the realizable unit and allonorme for the realized variants (segments of varieties).