What are the right and left atria?Multiple choice question.enlargements in the walls of the pulmonary trunk and aortathin-walled upper chambers of the heart that receive blood returning to the heartthick bundles of cardiac muscle that rim the chamber wallsthick-walled lower chambers of the heart that pump blood out of the heart

Blood leaving the right ventricle flows into the ______.Multiple choice question.left ventricleaortapulmonary trunkright atria

Select all that applyChoose all features of the atria of the heart.Multiple select question.upper chambersthick-walledlower chambersreceive blood returning to the heartthin-walled

Which of the following structures is found between the right atrium and the right ventricle in a mammal?Multiple choice question.The SA nodeThe aortic valveThe tricuspid valveThe bicuspid valve

Which heart chamber is connect to (and propels blood into) the pulmonary trunk?Multiple choice question.Right atriumRight ventricleLeft ventricleLeft atrium

Blood passing through the right atrioventricular valve has just left which heart chamber?Group of answer choicesright atriumright ventricleleft atriumleft ventricle