Tartós orthostaticus toleranciát támogató élettani mechanizmusok a végtagi vénákban.

Translated title of the contribution: Physiologic mechanisms in extremity veins supporting chronic orthostatic tolerance

E. Monos, Miklós Lóránt, Gabriella Dörnyei, V. Bérczi, G. Nádasy

Research output: Contribution to journalArticle

Abstract

As a consequence of chronic orthostatic load of the organism several long-term antigravitation defense mechanism are activated in the lower extremity veins and microvessels. The following adaptive mechanisms are brought into focus: acute pressure-induced myogenic tone and its augmentation which promote the venous capacity autoregulation, potassium channels counterregulating the depolarization of the venous smooth muscle membrane, functional and structural remodeling of sympathetic innervation in the vascular wall, changes in venous network properties, decreased capillary supply in oxidative muscles of the extremities, and probably transendothelial homeostatic water transport in the wall of veins.

Original languageHungarian
Pages (from-to)1725-1730
Number of pages6
JournalOrvosi Hetilap
Volume144
Issue number35
Publication statusPublished - Aug 31 2003

Fingerprint

Veins
Extremities
Potassium Channels
Microvessels
Smooth Muscle
Blood Vessels
Lower Extremity
Homeostasis
Pressure
Muscles
Membranes
Water

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Tartós orthostaticus toleranciát támogató élettani mechanizmusok a végtagi vénákban. / Monos, E.; Lóránt, Miklós; Dörnyei, Gabriella; Bérczi, V.; Nádasy, G.

In: Orvosi Hetilap, Vol. 144, No. 35, 31.08.2003, p. 1725-1730.

Research output: Contribution to journalArticle

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