Arteries and Veins

What is the main function of veins in the circulatory system?

• To transport oxygen to the body

• To regulate body temperature

• To carry deoxygenated blood back to the heart.

• To pump blood to the lungs

Name one key difference between arteries and veins.

• Location in the body

• Direction of blood flow

• Oxygenation of blood

• Size of blood vessels

How does the structure of arteries differ from veins?

• Arteries have thicker walls with more smooth muscle and elastic tissue, while veins have thinner walls with less muscle and elastic tissue.

• Arteries have valves to prevent backflow, while veins do not have valves.

• Arteries carry deoxygenated blood, while veins carry oxygenated blood.

• Veins have thicker walls with more smooth muscle and elastic tissue, while arteries have thinner walls with less muscle and elastic tissue.

Which type of blood vessel carries oxygen-rich blood away from the heart?

• Capillaries

• Veins

• Arteries

• Lymphatic vessels

In which blood vessels does blood flow at a higher pressure: arteries or veins?

• Bronchioles

• Arteries

• Lymphatic vessels

• Capillaries

What is the role of valves in veins?

• Regulate blood pressure

• Increase blood flow

• Transport oxygen

• Prevent backflow of blood

Describe the direction of blood flow in arteries.

• Blood flows in a circular motion in arteries.

• Blood flows sideways in arteries.

• Blood flows away from the heart through arteries.

• Blood flows towards the heart through arteries.

How do arteries and veins contribute to the overall circulation of blood in the body?

• Arteries carry deoxygenated blood away from the heart

• Veins carry oxygenated blood back to the heart

• Arteries carry deoxygenated blood back to the heart

• Arteries carry oxygenated blood away from the heart, while veins carry deoxygenated blood back to the heart.