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Science 2nd Year > The Circulatory System > Flashcards

The Circulatory System Flashcards

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1
Q

What is the liquid part of blood called?

A

Plasma

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2
Q

What is blood made up of?

A

Platelets
Red blood cells
White blood cells
Plasma

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3
Q

What is the function of plasma?

A

To transport substances and heat

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4
Q

What is the function of red blood cells?

A

To transport oxygen

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5
Q

What is the function of white blood cells?

A

Fight disease

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6
Q

What is the function of platelets?

A

To clot blood

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7
Q

Name the three blood vessels

A

Capillaries
Arteries
Veins

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8
Q

What is the structure of veins?

A 
➖Thin wall, large lumen 
➖Blood doesn't flow under pressure 
➖Has valves 
➖Carries blood to the heart
➖Usually contains oxygen poor blood
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9
Q

What is the structure of arteries?

A 
➖Thick wall, small lumen
➖Under high pressure
➖No valves
➖Carries blood away from the heart
➖Usually contains oxygen rich blood
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10
Q

What is the structure of capillaries?

A

➖Thin wall, tiny lumen
➖Blood flows under low pressure
➖no valves
➖Connects arteries and veins

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11
Q

What is the function of the heart?

A

To pump blood around the body

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12
Q

What is the function of the aorta?

A

It carries oxygenated blood from the left side of the heart to the main organs

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13
Q

What is the function of the pulmonary vein?

A

To carry oxygenated blood from the lungs to the left side of the heart

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14
Q

What is the function of the pulmonary artery?

A

It carries deoxygenated blood to the lungs from the right side of the heart

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15
Q

What is the function of the vena cava?

A

It carries deoxygenated blood from the organs to the right side of the heart?

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16
Q

What are the four chambers of the heart?

A 
The:
Right atrium
Left atrium 
Right ventricle 
Left ventricle
17
Q

Which side of the heart has a thicker wall and why?

A

The left because it has to pump blood around the body

18
Q

What do valves prevent?

A

The backflip of blood

19
Q

What if the wall that divides the left side and the right side of the heart?

A

The septum

20
Q

What is the average persons pulse rate?

A

70

21
Q

What are the functions of blood?

A

Transport
Defence against disease
Keeping body temperature constant

22
Q

What is double circulation?

A

The heart is pumping blood to the lungs and around the body at the same time.

Science 2nd Year (18 decks)

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