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Digestive And Circulatory System > Circulatory System > Flashcards

Circulatory System Flashcards

1
Q

What is in blood?

A

White blood cells, red blood cells, platelets and plasma.

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2
Q

How much blood does an average size human have?

A

About 5 litres.

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3
Q

What are red blood cells for?

A

To carry oxygen around your body.

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4
Q

What are white blood cells for?

A

To help protect your body from disease. They ‘engulf’ it.

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5
Q

What are platelets for?

A

To clot the blood,to stop the bleeding and stop germs from entering.

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6
Q

What is plasma?

A

The straw coloured liquid that red and white blood cells and platelets float in.

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7
Q

You circulatory system is responsible for what?

A

Transporting oxygen and nutrients to your body’s cells and wastes such as carbon dioxide away from them.

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8
Q

This involves interactions between…

A

Blood cells, blood vessels and your heart.

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9
Q

What are the three types of blood vessels?

A

Arteries, veins and capillaries.

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10
Q

What are arteries?

A

Thick
Elastic
Carry blood under high pressure away from heart

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11
Q

What are veins?

A

Thin walls
Valves to prevent blood flowing backwards
Takes blood to the heart

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12
Q

What are capillaries?

A

Small
A lot of them
Transport oxygen and nutrients to cells and remove carbon dioxide.

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13
Q

What are the valves for?

A

To stop blood flowing backwards
Valve is open when it flows in correct direction
Valve closed to stop blood flowing the wrong way

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14
Q

What is different about the two sides of the heart?

A

One has deoxygenated blood and the other has oxygenated blood. Also one side is thicker to pump the blood to the rest of the body.

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15
Q

What colour is de oxygenated blood?

A

Blueish

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16
Q

What are the parts of the heart?

A 
Superior vena cava
Right atrium
Right ventricle
Inferior vena cava
Artery
Left ventricle
Left atrium
Pulmonary veins
Pulmonary arteries
Aorta
17
Q

What are the four chambers? Which is top and which is bottom?

A

The upper two are called the atria, left and right atrium.

The lower two are the left and right ventricle.

18
Q

What happens to a person with an irregular heartbeat?

A

They require a pacemaker which regulates their heart beat

19
Q

What is strange about the cardiac muscle?

A

It never tires

20
Q

What is blood?

A

The red liquid that exits your body if you cut yourself.

21
Q

Is pulmonary artery, pulmonary veins, aorta, vena cava and carotid arteries oxygenated or de oxygenated?

A

Aorta, pulmonary veins and carotid arteries all have oxygenated blood
Pulmonary veins and vena cava are all de oxygenated

22
Q

What are the organs in circulatory?

A

Heart and lungs

23
Q

What are the organs in respiratory?

A

Lungs

24
Q

What are the organs in excretory?

A

Kidney
Skin
Liver
Lungs

25
Q

What is the order of the blood?

A

Body-vena cava-right atrium-right ventricle-pulmonary artery-lungs-pulmonary vein-left atrium-left ventricle-aorta-body

26
Q

What do coronary arteries supply the heart with?

A

Oxygen

27
Q

What is a normal heartbeat?

A

Between 60-100 beats per minute

28
Q

What ensures normal heart beat?

A

Electrical current acts as natural pacemaker

29
Q

What does cholesterol do?

A

Blocks up your artery

30
Q

Can heart cells repair them selves?

A

No

31
Q

How many heart cells?

A

2 billion

32
Q

Is it the only organ that supplies itself?

A

Yes

33
Q

What will send someone into a cardiac arrest?

A

When the heart restarts if one beat is out of time

34
Q

How many heart cells die if you have a heart attack?

A

500 thousand

35
Q

Do your lungs fill up with fluid when you have a heart attack?

A

Yes

36
Q

What are symptoms of a heart attack?

A

Dizziness
Pain
Confusion

Digestive And Circulatory System (2 decks)

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