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Human Circulatory System

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Questions and Answers

What is the main function of arteries?

To bring oxygen-poor blood back to the heart
To bring oxygen-rich blood to the body's cells and tissues (correct)
To pump blood throughout the body
To exchange oxygen and nutrients with the tissue cells

What is a characteristic of arteries?

They have thinner walls
They carry deoxygenated blood
They have high pressure inside them (correct)
They have valves inside them

What type of blood do arteries carry?

Carbon dioxide-rich blood
Oxygen-rich blood (correct)
Oxygen-poor blood
Nutrient-rich blood

What is the relationship between arteries and veins?

Arteries bring oxygen-rich blood, while veins bring oxygen-poor blood (C) Signup and view all the answers

Why don't arteries need valves?

Because the force of the blood coming from the heart ensures a one-way direction (C) Signup and view all the answers

What is the main difference between arteries and veins in terms of pressure?

Arteries have higher pressure, while veins have lower pressure (C) Signup and view all the answers

What is the primary function of arteries in the circulatory system?

To transport blood away from the heart (A) Signup and view all the answers

What is unique about the walls of arteries?

They have strong, muscular walls (B) Signup and view all the answers

What is the name of the large artery that leaves the heart?

Aorta (B) Signup and view all the answers

What is the relationship between arteries and arterioles?

Arterioles are branches of arteries (A) Signup and view all the answers

What is the direction of blood flow in arteries?

Away from the heart (D) Signup and view all the answers

What is the purpose of the three layers in the walls of arteries?

To handle high blood pressure (D) Signup and view all the answers

At the base of the heart, which chambers can be found?

Both the atria and ventricles (A) Signup and view all the answers

What is the main difference between the left and right ventricles?

The left ventricle is thicker-walled (A) Signup and view all the answers

What is the purpose of the atrioventricular valves (AV valves)?

To open and close between the upper and lower heart chambers (C) Signup and view all the answers

Which of the following is NOT a part of the heart's internal structure?

Aorta (C) Signup and view all the answers

What is the function of the chordae tendineae?

To attach to the edges of the atrioventricular valves (C) Signup and view all the answers

What is the interventricular septum?

A wall that separates the left and right ventricles (D) Signup and view all the answers

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