Afterload corresponds to the resistance that works against the contraction of the heart muscle, limiting the ejection of blood from the heart. The heart‘s afterload increases in the setting of hypertension or valvular stenosis, for example. Compensatory to this, the heart muscle may hypertrophy and promote heart failure. What is afterload? Afterload corresponds to the … Afterload: Function, Tasks, Role & Diseases
The Frank-Starling mechanism is the autonomic regulation of the heart‘s internal ejection and filling capacity that compensates for short-term fluctuations in pressure and volume. This vital regulation plays a role primarily during changes in body position. The mechanism can no longer compensate for larger changes in pressure. What is the Frank-Starling mechanism? Schematic anatomical representation … Frank-Starling Mechanism: Function, Tasks, Role & Diseases
Preload is the force that stretches the fibers of the heart‘s ventricles during the relaxation and filling phases of the heart (diastole), which can contract. Thus, preload is involved in the basic function of the human heart, which is a vital organ that pumps blood throughout the body. In reverse failure in heart failure, complications … Preload: Function, Tasks, Role & Diseases
The ejection phase of systole follows the tense phase. During the ejection phase, stroke volume is pumped into the aorta. Synonymous with the ejection phase of systole is the term expulsion phase. Valvular defects, such as tricuspid regurgitation, can disrupt the ejection phase and cause pathologic changes in the heart. What is the ejection fraction? … Ejection Phase: Function, Tasks, Role & Diseases
