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Blood Circulation: Arteries and Veins

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Questions and Answers

What type of blood does the venous system carry?

Oxygenated blood

Filtered blood

Plasma

Deoxygenated blood (correct)

Where are deep veins located in the body?

On the surface of muscles

Just under the skin

Inside organs

Deep within the body (correct)

What is the main difference between arteries and veins?

Arteries have more smooth muscle

Arteries have lower pressure

Veins have thinner vessel walls (correct)

Veins have thicker vessel walls

What percentage of total blood volume is typically found in veins?

75% Signup and view all the answers

Why do veins have valves?

To prevent blood from flowing back away from the heart Signup and view all the answers

Which of these is a characteristic of superficial veins?

Can be seen and felt just under the skin Signup and view all the answers

What type of blood do pulmonary veins carry?

Oxygenated blood Signup and view all the answers

What is the largest vein in the body called?

Vena cava Signup and view all the answers

Why is the pressure generally much lower in veins than in arteries?

Veins have larger diameters Signup and view all the answers

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

To carry deoxygenated blood from the body back to the heart Signup and view all the answers