Circulation Flashcards

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1
Q

The wall of the heart is made of

A

Muscle

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2
Q

The hear consist of four chambers what are they

A

Right atrium
Left atrium
Right ventricle
Left ventricle

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3
Q

What are the 3 different types of vessels

A

Arteries
Veins
Capillaries

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4
Q

What are the arteries

A

These carry blood away from the heart

They have thick walls because the blood pressure is high

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5
Q

What are the capillaries

A

Very thin blood vessels

This is where substances are exchanged between the calls and the blood

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6
Q

What are veins

A

These carry blood back to the heart

They often have valves to prevent backflow of the blood

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7
Q

What is plasma

A

The liquid part of the blood

Transports substances such as carbon dioxide and soluble food molecules eg glucose

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8
Q

What is a red blood cell

A

Contains haemoglobin which binds to oxygen to transport it from the lungs to the tissues

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9
Q

What are the white blood cells

A

These defend the body against pathogens

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10
Q

What are platelets

A

Fragments of cells which clot blood at the site of wounds

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