Biomaterial Database

Arteriolar vasomotion: implications for tissue ischemia. 1991

M Intaglietta

Department of AMES-Bioengineering, University of California, San Diego, La Jolla.

Vasomotion, the rhythmical contraction and relaxation of the arterioles, is a natural property of the arteriolar microcirculation. It is observed clinically through related flow variations (flux motion) which are detected by laser Doppler flowmetry. It presents two distinct regimens: slow and fast waves, with frequencies of 1-2 and 10-20 cpm, respectively. Both activities are found in normal tissues, and their rate of incidence as well as their magnitude become significantly enhanced during abnormal conditions associated with low blood pressure and hypoperfusion. The institution of this activity by abnormal tissue conditions suggests that vasomotion is a reaction of the microcirculation aimed at improving microvascular function.

UI	MeSH Term	Description	Entries
D009119	Muscle Contraction	A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.	Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D009126	Muscle Relaxation	That phase of a muscle twitch during which a muscle returns to a resting position.	Muscle Relaxations,Relaxation, Muscle,Relaxations, Muscle
D006706	Homeostasis	The processes whereby the internal environment of an organism tends to remain balanced and stable.	Autoregulation
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001160	Arterioles	The smallest divisions of the arteries located between the muscular arteries and the capillaries.	Arteriole
D014666	Vasomotor System	The neural systems which act on VASCULAR SMOOTH MUSCLE to control blood vessel diameter. The major neural control is through the sympathetic nervous system.	System, Vasomotor,Systems, Vasomotor,Vasomotor Systems