👉 The term "veins" refers to the blood vessels that carry deoxygenated blood from the body's tissues back to the heart. In an attempt to explain their functions, scientists have identified various types of veins, including superficial and deep veins, which serve distinct roles in circulation. Some veins, known as venules, merge to form larger veins that transport blood to the heart, while others, called lymphatic veins, help drain excess fluid from tissues. Researchers continue to study veins to better understand their complexities and how they contribute to overall bodily functions.
