What type of blood do venules primarily carry?

Venules are small blood vessels that collect deoxygenated blood from the capillary beds and transport it toward the veins and eventually back to the heart. By the time blood reaches the venules, it has already passed through the capillary system, where oxygen and nutrients have been delivered to tissues and waste products, such as carbon dioxide, have been collected. This blood is therefore lower in oxygen content and higher in carbon dioxide compared to arterial blood, making it deoxygenated. The primary role of venules in the circulatory system is to facilitate the return of this deoxygenated blood, ensuring efficient circulation and maintaining proper blood flow dynamics. This understanding of venules helps clarify their function in the overall system of gas exchange and blood circulation.