Which type of blood vessel assists in the transport of deoxygenated blood back to the heart?

The type of blood vessel that assists in the transport of deoxygenated blood back to the heart is veins. Veins have thinner walls compared to arteries, and they have valves that help prevent the backflow of blood, ensuring that deoxygenated blood flows in one direction towards the heart. As blood circulates through the body, it loses oxygen and gains carbon dioxide, leading to the collection of deoxygenated blood in the veins. This blood is then transported back to the heart, specifically into the right atrium, where it will be sent to the lungs for oxygenation.

Capillaries, while essential for the exchange of oxygen and carbon dioxide at the tissue level, do not transport blood directly to the heart. Arteries carry oxygenated blood away from the heart to the tissues, playing a critical role in the delivery of oxygen throughout the body. Venules are small blood vessels that collect blood from capillaries and merge to form veins, but they do not themselves transport blood directly to the heart in the same manner that veins do. Thus, veins are the primary vessels responsible for returning deoxygenated blood back to the heart.