Question

The capillaries will ultimately unite to form __________ joining to form ever-larger _________, eventually flowing into the two major systemic veins, the superior vena cava and the inferior vena cava, which return blood to the right atrium.

Answer 1

The capillaries unite to form venules and then veins, eventually leading to the superior and inferior venae cavae that return deoxygenated blood to the right atrium of the heart.

Step-by-step explanation:

The capillaries will ultimately unite to form venules, joining to form ever-larger veins, eventually flowing into the two major systemic veins, the superior vena cava and the inferior vena cava, which return blood to the right atrium. Blood that has circulated through the body has a lower oxygen concentration and collects in either the superior vena cava or inferior vena cava, dependent on whether it is draining from above or below the diaphragm, and then enters the right atrium of the heart. This systemic circulation is integral to the body's ability to function and requires a thorough understanding in health professions.