Circulatory System Blood Vessels

Which of the following lists the three main types of blood vessels in the human circulatory system?

• Arteries, arterioles, venules

• Arteries, veins, capillaries

• Capillaries, venules, veins

• Arteries, veins, lymphatics

Which statement accurately describes arteries?

• They carry deoxygenated blood towards the heart and have valves.

• They carry blood away from the heart under high pressure and have thick, elastic walls.

• They have thin, permeable walls for nutrient exchange.

• They have a large lumen and carry blood under low pressure.

What is a key characteristic of veins?

• They carry blood away from the heart.

• They transport blood under high pressure.

• They generally carry deoxygenated blood towards the heart and contain valves.

• Their walls are only one cell thick.

What is the role of a valve in the veins?

Compare the arteries and veins in terms of the muscle fibres and elastic tissue.