Question

Name the three kinds of blood vessels of human circulatory system. Write the function of each.

Answer 1

Three main kinds of blood vessels of the human circulatory system are

1) Arteries. - Arteries carry oxygen-rich blood away from the heart to all of the body's tissues. They branch several times, becoming smaller and smaller as they carry blood farther from the heart and into organs.

2) Capillaries - These are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide, and other waste products to pass to and from cells.

3) Veins - These are blood vessels that take blood back to the heart; this blood contains less oxygen and is rich in waste products that are to be excreted or removed from the body. Veins become larger as they get closer to the heart.