Veins: The Body's Blood Transporters

The video explains the role of veins in the circulatory system, highlighting their function of returning blood to the heart. It distinguishes veins from arteries, noting that veins are less muscular and closer to the skin. The video also explains why veins appear blue and classifies them into types: superficial, communicating, pulmonary, and systemic. Finally, it describes the function of veins in the circulatory cycle, emphasizing the role of the vena cava in transporting blood to the heart.

What are the different types of veins mentioned in the text, and what are their functions?

Describe the appearance of veins when observed through the skin and explain why they appear that way.