Match List I with List II regarding the regulation of cardiac activity: List-I List-II A. Medulla oblongata I. Decrease the rate of heart beat and cardiac output B. Sympathetic neural signals II. Moderates cardiac function through ANS C. Parasympathetic neural signals III. Increase the strength of ventricular contraction D. Adrenal medullary hormones IV. Hormonally increase the cardiac output Choose the correct answe

Step-by-step solution

Normal activities of the heart are regulated intrinsically, but a special neural centre in the medulla oblongata can moderate cardiac function through the autonomic nervous system (ANS). Thus, A matches with II. Neural signals through the sympathetic nerves (part of ANS) can increase the rate of heart beat, the strength of ventricular contraction, and thereby the cardiac output. Thus, B matches with III. Parasympathetic neural signals (another component of ANS) decrease the rate of heart beat, speed of conduction o