Comment

In physiology, autonomic nervous system (ANS) is instrumental mainly in short-term regulation of cardiovascular homeostasis. Its parasympathetic and sympathetic (SNS) components are regarded as two opposing forces with the parasympathetic nervous system endorsing “rest and digest” while the SNS “flight and fight”. For instance, common stressors like sudden postural change, physical exercise or hemorrhage result in momentary drop in cardiac output and arterial pressure resulting in reflex activation of SNS (within seconds), and the renin-angiotensin-aldosteron system and the vasopresinergic system (within minutes). This acute neurohormonal activation is aimed at maintaining cardiovascular homeostasis (in particular of central arterial pressu

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