Innervation of cardiovascular system Ix afferent Carotid Medullary X afferent sinuses cardiovascular centre Vagal Aortic baroreceptor TrTt Sympathetic efferent LAcetylchol Vessel Sinus Interneuron node muscarinIc Adrenaline in blood Noradrenaline Acetylcholine transm itter Sympathetic stimulation increases contractility, frequency, conduction velocity, and irritabilityInnervation of cardiovascular system