NEET PG DENTAL EXAM

Detailed explanation-1: -Your vagus nerve-which goes from your brainstem to your belly-plays a major role in your parasympathetic nervous system, which controls a number of things in your body, including heart rate.

Detailed explanation-2: -Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines-epinephrine and norepinephrine) to accelerate the heart rate.

Detailed explanation-3: -It is well accepted that the vagus nerve slows heart rate (HR), atrioventricular conduction and decreases atrial contraction, with vagus nerve stimulation (VNS) resulting in anti-arrhythmic effects and acting in a cardioprotective manner (Brack et al., 2013).

Detailed explanation-4: -Cardiac Vagal Control (CVC) reflects the input of the parasympathetic branch of the Autonomic Nervous System (ANS) to cardiac regulation. CVC is commonly measured using heart rate variability (HRV), an analysis of periodic beat-to-beat changes in heart rate that tend to aggregate in different frequency bands.