Question

blood leaving the superior vena cava enters which heart chamber? *
4 points
left atrium
left ventricle
right atrium
right ventricle

blood returning from the lung enters which heart chamber? *
4 points
left atrium
left ventricle
right atrium
right ventricle

the bicuspid or mitral valve is the valve *
4 points
between the left atrium and left ventricle
that opens from the right ventricle into the artery
between the right atrium and right ventricle
that opens from the left ventricle into the artery

Explanation:

1. The superior vena cava carries deoxygenated blood from the upper body directly into the right atrium of the heart.
2. Oxygenated blood returning from the lungs travels through the pulmonary veins and enters the left atrium.
3. The bicuspid (mitral) valve is an atrioventricular valve located between the left atrium and left ventricle, preventing backflow of blood when the ventricle contracts.

Answer:

1. right atrium
2. left atrium
3. between the left atrium and left ventricle