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Circulatory System Pathways

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Questions and Answers

What is the primary function of the sinoatrial node in the heart?

To separate oxygenated and deoxygenated blood

To transport nutrients to the heart muscle

To regulate the heartbeat (correct)

To pump blood throughout the body

What is the main difference between smooth muscle and skeletal muscle?

Smooth muscle is involuntary, skeletal muscle is voluntary (correct)

Smooth muscle is found in the heart, skeletal muscle is found in the bones

Smooth muscle is voluntary, skeletal muscle is involuntary

Smooth muscle is found in the bones, skeletal muscle is found in the heart

What is the purpose of the septum in the heart?

To separate oxygenated and deoxygenated blood (correct)

To regulate the heartbeat

To transport nutrients to the heart muscle

To pump blood throughout the body

What is the difference between arteries and veins?

Arteries carry oxygenated blood, veins carry deoxygenated blood Signup and view all the answers

What is the function of the atrioventricular node in the heart?

To transmit electrical signals from the sinoatrial node Signup and view all the answers

What is the role of the pulmonary arteries in the heart?

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

What is the purpose of the valves in the heart?

To prevent backflow of blood Signup and view all the answers

What is the role of the aorta in the heart?

To carry oxygenated blood from the heart to the rest of the body Signup and view all the answers

What is the function of the venae cavae in the heart?

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

What is the role of the Purkinjie fibres in the heart?

To transmit electrical signals to the ventricles Signup and view all the answers