[Functional significance and modeling of spiral-shaped blood vessels].
Models to demonstrate and study changes in the blood vessels forms under contractile effect of the smooth muscle fibres and mechanisms performing fluid transport in the model vessels when their form and changes are demonstrated. As the smooth muscle fibres can twist in opposite directions, the blood vessels can also spiral in opposite directions and spasm at various places along their length, thus performing blood transport. How the changes in the form affect the blood transport is demonstrated. Owing to the modelling the phenomenon of a directed fluid movement in closed spiral-shaped channels has been stated and it has been proved that the directed fluid movement depends on a disturbed equilibrium state of the fluid when it is subjected to a combined effect of the Earth gravitation and thermal irradiation. It has been stated that the directed fluid movement in the spiral shaped channels depends on their orientation towards the gravitational vector and absorbtion of the energy by the fluid in some coils of these channels. It is possible to conclude that the spiral-shaped form of the blood vessels and its enantiomorphism are morphological properties of tissues and they play an important role in hemodynamics, thermoregulation and interconnection with certain external effective factors.
D055592:Biophysical Phenomena; D001703:Biophysics; D001808:Blood Vessels / Q000502:physiology*; D008955:Models, Cardiovascular; D009131:Muscle, Smooth, Vascular / Q000502:physiology
Funktsional'noe znachenie spiralevicnoĭ formy krovenosnykh sosudov i ee modelirovanie.