Hypertension regulation of blood pressure A Postural baroreflex: responsible for rapid, moment to moment adjustments in blood pressure. Sense the stretch of the vessel walls from a reclining to an upright posture; 2. Nucleus of the tractus solitarius reduction of peripheral vacular resistance; Reduction in intravascular volume: Brain stem Sensory fiber 1. Baroreceptor in carotid sinus Inhibitory interneurons Arterial blood pressure 3. Vasomotor Motor fibers 4. Autonomic 5. Sympathetic nerve ending 6.aor阝 receptor Figure 11-2. Baroreceptor reflex arcSense the stretch of the vessel walls • from a reclining to an upright posture; • reduction of peripheral vacular resistance; • Reduction in intravascular volume; - A. Postural baroreflex: responsible for rapid , moment to moment adjustments in blood pressure