Y10 The Heart Flashcards

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1
Q

What type of muscle is the heart made of?

A

Heart muscle/cardiac muscle

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2
Q

What supplies blood to the cardiac muscle?

A

Coronary arteries

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3
Q

Where does the blood enter the heart?

A

The atria

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4
Q

Where does the blood coming into the right atrium come from, and what kind of blood is it?

A

Vena cava, deoxygenated blood

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5
Q

Where does the blood coning into the left atrium come from, and what kind of blood is it?

A

Pulmonary vein, oxygenated blood

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6
Q

What do the ventricles do?

A

Comtract to force blood out of the heart?

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7
Q

Where does the blood from the right ventricle go, and what kind of blood is it?

A

Pulmonary artery, deoxygenated blood

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8
Q

Where does the blood from the left ventricle go, and what kind of blood is it?

A

Aorta (largest artery in the body), oxygenated blood

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9
Q

What is the purpose of the valves?

A

To stop the backflow of blood

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10
Q

Why is the muscle wall thicker in the left ventricle?

A

To develop the pressure needed to force the blood through the arterial system

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11
Q

Where does blood on the right side of the heart go?

A

To the lungs

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12
Q

Where does blood on the left side of the heart go?

A

All around the body

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13
Q

Where is the natural pacemaker?

A

In the right atrium

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14
Q

Why do people need replacement valves?

A

To replace leaky or stiff valves that don’t allow proper blood flow or allow backflow of blood.

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