baroreseptorrefleksen
Baroreceptor reflex, known in Swedish as baroreseptorrefleksen, is a rapid, automatic mechanism that helps maintain stable blood pressure. The reflex is mediated by specialized stretch‑sensing nerve endings, called baroreceptors, located primarily in the carotid sinus and aortic arch. These receptors are sensitive to changes in arterial wall tension, which correlate with blood pressure.
When arterial blood pressure rises, the increased stretch of the baroreceptor membranes activates afferent signals that
Conversely, a drop in arterial pressure reduces baroreceptor firing. This leads to increased sympathetic tone and
The reflex is finely tuned and can adapt over time; chronic hypertension, for instance, can shift the