What is homeometric mechanism?
Homeometric autoregulation, in the context of the circulatory system, is the heart’s ability to increase contractility and restore stroke volume when afterload increases. Homeometric autoregulation occurs independently of cardiomyocyte fiber length, via the Bowditch and/or Anrep effects.
What does Heterometric autoregulation mean?
[ hĕt′ə-rō-mĕt′rĭk ] n. Autoregulation of the strength of ventricular contraction that occurs in direct relation to the end diastolic fiber length, as in law of the heart.
What is autoregulation in biology?
Autoregulation is a biological process in which an internal adaptive mechanism works to adjust (or mitigate) an animal’s response to stimuli. For example, the autoregulation process results in the maintenance of blood flow to tissues at a certain level despite variations in blood pressure or metabolism.
What is Heterometric regulation of cardiac output?
Heterometric autoregulation is also known as the length-tension relationship, the relationship of end diastolic volume to end diastolic pressure, Starling law of the heart, and the Frank-Starling mechanism.
What is decreased ventricular compliance?
For example, in ventricular hypertrophy the ventricular compliance is decreased (i.e., the ventricle is “stiffer”) because the thickness of the ventricular wall increases; therefore, ventricular end-diastolic pressure (EDP) is higher at any given end-diastolic volume (EDV) (see Figure).
What is autoregulation in physiology?
Autoregulation is a major physiological regulatory process, whereby an increase in blood flow to an organ or tissue engenders vasoconstriction and a sustained increased vascular resistance [484,485].
What is Autoregulated?
Autoregulation is a manifestation of local blood flow regulation. It is defined as the intrinsic ability of an organ to maintain a constant blood flow despite changes in perfusion pressure. As resistance decreases, blood flow increases despite the presence of reduced perfusion pressure.
What’s another word for autoregulation?
self-regulation, selfregulation, self-.
What is meant by autoregulation?
Autoregulation refers to the capacity of the cerebral circulation to alter vascular resistance in order to maintain a relatively constant CBF over a range of mean arterial pressure (MAP).
What is Heterometric?
Definition of heterometric : characterized by diversity of meter.
What is the autoregulatory mechanism by the kidneys?
Renal blood flow (RBF) autoregulation is a vital homeostatic mechanism that protects the kidney from elevations in arterial pressure that would be transmitted to the glomerular capillaries and cause injury.