[Arteriole reactions to rhythmic displacement of the fibers of the submaxillary muscle].
The fibers of acutely decentralized resting submaxillary muscle of anesthetized frogs were locally shifted by a piezoelectric device (frequency--about 4 Hz) in the direction of fiber shortening during muscular contractions. Arteriole configuration in the affected area changed and they became dilated. The maximum increase of the diameter was 16 to 126%. The latent period, the time during which peak reaction was reached, and the degree of arteriole dilatation during configuration changes were similar to those observed during 4 Hz muscle twitches. It is suggested that a mechanical factor, namely arteriole microdeformations, plays an essential role in the working hyperemia of skeletal muscles.
D000818:Animals; D001160:Arterioles / Q000502:physiology; D008410:Masticatory Muscles / Q000098:blood supply / Q000502:physiology*; D009119:Muscle Contraction; D009131:Muscle, Smooth, Vascular / Q000502:physiology; D010812:Physical Stimulation; D011898:Ranidae; D011930:Reaction Time / Q000502:physiology; D014664:Vasodilation
Reaktsii arteriol na ritmicheskoe smeshchenie volokon podcheliustnoĭ myshtsy.