autoregulation

autoregulation /au·to·reg·u·la·tion/ (-reg″u-la´shun)

1. the process occurring when some mechanism within a biological system detects and adjusts for changes within the system.

2. in circulatory physiology, the intrinsic tendency of an organ or tissue to maintain constant blood flow despite changes in arterial pressure, or the adjustment of blood flow through an organ in accordance with its metabolic needs.

heterometric autoregulation intrinsic mechanisms controlling the strength of ventricular contractions that depend on the length of myocardial fibers at the end of diastole.

homeometric autoregulation

1. intrinsic mechanisms controlling the strength of ventricular contractions that are independent of the length of myocardial fibers at the end of diastole.

2. Anrep effect.

au·to·reg·u·la·tion (ô

-r

-l

1. The tendency of the blood flow toward an organ or part to remain at or return to the same level despite changes in arterial pressure.

2. A biological system equipped with inhibitory feedback systems such that a given change tends to be largely or completely counteracted.

autoregulation

Etymology: Gk, autos, self; L, regula, rule

an intrinsic capacity of organs to regulate their own blood flow or metabolic activity. The former process results from the contraction or relaxation of self-excitable smooth muscle, which causes the constriction or dilation of vessels. It allows organs to maintain constant blood flow and meet their metabolic needs despite variations in systemic arterial pressure.

autoregulation [aw″to-reg″u-la´shun]

control of certain phenomena by factors inherent in a situation; specifically, (1) maintenance by an organ or tissue of a constant blood flow despite changes in arterial pressure, and (2) adjustment of blood flow through an organ in accordance with its metabolic needs.

heterometric autoregulation those intrinsic mechanisms controlling the strength of ventricular contractions that depend on the length of myocardial fibers at the end of diastole.

homeometric autoregulation those intrinsic mechanisms controlling the strength of ventricular contractions that are independent of the length of myocardial fibers at the end of diastole.

autoregulation,

n 1. self-adjustment.
2. inherent capability to adjust one's own physiology. See also homeostasis and naturopathy.

autoregulation

heterometric autoregulation

those intrinsic mechanisms controlling the strength of ventricular contractions that depend on the length of myocardial fibers at the end of diastole.

homeometric autoregulation

those intrinsic mechanisms controlling the strength of ventricular contractions that are independent of the length of myocardial fibers at the end of diastole.

Mentioned in	?		References in periodicals archive	?		Medical browser	?		Full browser	?
air cell alveolar cell ameboid cell Anrep phenomenon Buffer Theory drug essential hypertension heterometric autoregulation homeometric autoregulation juxtaglomerular apparatus LAK cells tubuloglomerular feedback	It reflects the autoregulation mechanisms and capillary volume. Perfusion CT evaluation in experimentally induced testicular torsion by Ovali, Gulgun Yilmaz; Yilmaz, Omer; Tarhan, Serdar; Genc, Abdulkadir; Demireli, Peyker; Tuncyurek, O / Canadian Urological Association Journal (CUAJ) This disproportionate decrease indicates that the extract that acts as a direct vasodilator blunted autoregulation of coronary flow. Wild strawberries by Finney-Brown, Tessa / Australian Journal of Medical Herbalism Altered free radical metabolism in acute mountain sickness: implications for dynamic cerebral autoregulation and blood-brain barrier function. Preserving cognitive function with aging by Goepp, Julius / Life Extension	autopharmacological autophobia autophony autoplasmotherapy autoplastic maneuver autoplasty Autoplex T autoploid autopodium Autopoietic Gaia autopolymer autopolymer resin autopolymerization autopolyploid autopolyploidy autoprothrombin C autoprothrombin I autoprothrombin II autopsy autopsy pathology autopsy permit autoradiograph autoradiography autoreactive autorefraction autoregulation autoreinfection autoreproduction autosensitization autosepticemia autoserous treatment autoserum autosexing autosexual autosite autosmia autosomal Autosomal chromosome Autosomal disease Autosomal dominance autosomal dominant autosomal dominant disorders Autosomal dominant inheritance autosomal dominant polycystic kidney disease Autosomal gene autosomal inheritance autosomal recessive autosomal recessive disorders Autosomal recessive inheritance autosomal-dominant inheritance autosomal-recessive inheritance	Autorail Touristique du Minervois Autorails Touristiques Seine et Marnais autoranging autoreactive autoreactive T cells in autologous mixed lymphocyte reaction autoreducing tachymeter autorefraction autorefractometer autorefractometer Autorefractor Autorefractor Autoregressive Autoregressive Autoregressive conditional heteroscedasticity Autoregressive conditional heteroskedasticity Autoregressive conditional heteroskedasticity Autoregressive conditional heteroskedasticity Autoregressive conditional heteroskedasticity Autoregressive conditional heteroskedasticity Autoregressive conditional heteroskedasticity Autoregressive Constrained Categorical Regression Autoregressive Distributed Lag Model Autoregressive Exogenous Autoregressive fractionally integrated moving average Autoregressive moving average Autoregressive Moving Average eXogenous Autoregressive moving average model Autoregressive process Autoregressive Processes autoregressive series autoregulation Autoregulation of Cerebral Blood Flow autoregulatory escape autoregulatory escape autoregulatory escape autoregulatory escape autoreinfection Autoreply autoreproduction Autoresonant Accelerator Autoresponder autorestart autoreverse Autori Cattolici e Opere Liturgiche Autori Vari Autorickshaw Autorickshaws Autoridad de Acueductos y Alcantarillados Autoridad de Carreteras y Transportación Autoridad de Energía Eléctrica Autoridad de la Región Interoceánica Autoridad de Promoción del Comercio Autoridad del Canal de Panama Autoridad Metropolitana de Transporte Autoridad Nacional del Ambiente Autoridad Nacional Palestina Autoridad Portuaria de la Bahía de Algeciras Autoridad Portuaria de Málaga

Mentioned in

References in periodicals archive

Medical browser

Full browser