Blood enters the heart as a result of two big veins, the inferior and superior vena cava, emptying oxygen-lousy blood from your body into the proper atrium. Autonomic innervation of the center The heart receives nerve indicators from your vagus nerve and from nerves arising in the sympathetic trunk. These https://120-cash33210.affiliatblogger.com/88977813/5-simple-statements-about-4200-loan-explained