Question

Fill in the blanks:
Vena cava drains blood into the _______ atrium while pulmonary vein drains blood into the ________ atrium.

• A. right
• B. left

Answer 1

Blood vessels

1. Blood vessels are tube-like components of a closed circulatory system that circulate blood throughout the body.

Veins

1. Veins are the blood vessels that are responsible for bringing blood to the heart.
2. The superior vena cava and inferior vena cava are the primary vessels that enter the right atrium. These are the primary veins that bring blood back to the heart from the systemic circulation.
3. The main function of the pulmonary veins is to carry oxygenated blood from the lungs to the left ventricle.

Final answer:

Vena cava drains blood into the right atrium while the pulmonary vein drains blood into the left atrium.