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Science > The Heart > Flashcards

The Heart Flashcards

1
Q

Which side of the heart is the blood oxygenated?

A

Left side

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2
Q

What side of the heart is the blood deoxygenated?

A

The right side

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3
Q

What happens when the heart expands?

A

Blood flows into the atria from the vena cava and the lungs through pulmonary vein

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4
Q

What happens when the heart contracts?

A

Blood flows away from the ventricles to the lungs through the pulmonary artery and to the body through the aorta

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5
Q

What does an ECG measure?

A

The electrical current going through the heart

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6
Q

What are capillaries?

A

Very thin blood vessels, create a capillary bed to supply every cell with blood

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7
Q

What are veins?

A

Vessels that carry blood to the heart

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8
Q

What are arteries?

A

Vessels that carry blood from the heart to the body

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9
Q

What is thicker - an artery or vein?

A

Artery

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10
Q

Where do red blood cells develop?

A

In bone marrow

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11
Q

How long of red blood cells circulate in the body for?

A

120 days

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12
Q

What percentage of plasma is water?

A

90%

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13
Q

What do platelets do?

A

Clot the blood, play role in immune system

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14
Q

What do the white blood cells do?

A

Clean immune system; help fight bacteria,viruses, cancer cells, infections and diseases; second line of defence - protect against foreign bodies

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15
Q

What do red blood cells do?

A

Carry oxygen and iron (haemoglobin) around the body

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16
Q

What do the coronary arteries do?

A

Supply blood to heart

17
Q

What is the muscle that separates the sides of the heart called?

A

Septum

18
Q

What is the largest vein in the body called?

A

Vena cava

19
Q

What is deoxygenated blood?

A

Blood poor in oxygen

20
Q

What is oxygenated blood?

A

Rich in oxygen

21
Q

What is breathing in called?

A

Inhalation

22
Q

What is breathing out called?

A

Exhalation

23
Q

Oxygen makes it’s way into the blood from what part of the lungs?

A

The alveoli

24
Q

What is the largest artery in the body called?

A

The aorta

Science (5 decks)

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