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Biology Yr 10 > Circulatory System > Flashcards

Circulatory System Flashcards

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1
Q

What are the 3 main components of the circulatory system

A

Heart, blood vessels, blood.

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2
Q

What circulation carries blood to and from the lungs?

A

Pulmonary circulation

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3
Q

What circulation carries blood to and from the rest of the bodies organs

A

Systemic circulation

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4
Q

What artery carries deoxygenated blood?

A

The pulmonary artery

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5
Q

What is the only vein to carry oxygenated blood

A

The pulmonary vein

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6
Q

What carries blood away from the heart

A

Artery’s

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7
Q

What carries blood through organs and tissue

A

Capillaries

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8
Q

What carries blood towards the heart

A

Veins

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9
Q

How does blood pressure differ between arteries, capillaries and veins

A

Arteries alpha e high blood pressure, capillaries have low blood pressure and veins have v. Low blood pressure

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10
Q

What blood vessel have valves to stop blood flowing back?

A

Veins

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11
Q

How do different blood vessels differ in terms of wall thickness

A

Arteries have thick walls while capillaries and veins have much thinner ones

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12
Q

What does the heart do?

A

Pumps the blood around the body

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13
Q

What keeps the blood flowing in one direction through the heart

A

One way valves open and then close tight

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14
Q

Why are the walls of the ventricles thicker than the atria

A

They have to pump blood to the organs and the blood pressure is higher, so the atria does not need as much energy or blood

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15
Q

What happens to your heart when u get excited or exercise

A

It gets faster because you are using more energy and blood needs to get to the organs and muscles quicker

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16
Q

How can exercise reduce stress

A

There is an in creased sense of well-being

17
Q

If a man who has been resting starts doing some exercises, what is the effect on the bpm

A

It basically doubles

18
Q

Does a fit or unfit person have a higher heart rate on average

A

Unfit

19
Q

What is an advantage of being fit

A

Less chance of a heart attack

20
Q

What effect does exercise have on coronary arteries

A

They become wider, so build up of fatty deposits is less likely

21
Q

How can you help avoid heart disease

A

By exercising frequently and reducing stress

22
Q

What’s the function of a red blood cell

A

Carry oxygen to the lungs

23
Q

White blood cell

A

Gets rid of illness

24
Q

Platelet function

A

Helps clot blood

25
Q

Why is the left side of the heart thicker than the right?

A

It goes to the organs and the rest of the body, whereas the right only goes to the lungs

Biology Yr 10 (2 decks)

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