D Question 27 During the refractory period in cardiac muscles: O The atria receive blood from systems andlungs O The right ventricle pushes blood to the aorta The left ventricle pushes blood to the lungs The superiorand inferior vena cava contract O The pulmonary and aortic semilunar valves open… Show more Biology Science Anatomy BIO 203 Share QuestionEmailCopy link Comments (0)




