The right atriumMultiple Choiceis the location of the pacemaker cells of a normal heart.prevents blood flow from the left ventricle to the left atrium.prevents blood flow from the pulmonary artery to the right ventricle.prevents blood flow from the right ventricle to the right atrium.prevents blood flow from the aorta to the left ventricle.

The aortic semilunar valveMultiple Choiceis the location of the pacemaker cells of a normal heart.prevents blood flow from the right ventricle to the right atrium.prevents blood flow from the left ventricle to the left atrium.prevents blood flow from the aorta to the left ventricle.prevents blood flow from the pulmonary artery to the right ventricle.

Which chamber of the heart pumps blood into the pulmonary circuit?Multiple Choiceright atriumright ventricleleft atriumleft ventricleaorta

Which ONE of the following statements regarding the right atrium of the heart is CORRECT?Group of answer choicesIts opening into the right ventricle is guarded by the tricuspid valveIt receives de-oxygenated blood from the pulmonary veinsIt receives de-oxygenated blood via pulmonary arteriesIt forms the base of the heart between the superior and inferior venae cavaeThe ligamentum arteriosium is a remnant of the fetal circulation that is associated with it

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

Pacemaker cells are found in which chamber of the heart?