Organising animals and plants

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11 Terms

1
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What is the pathway of the blood in the heary and what do they do?

ā†³ Vena carva- brings deoxygenated blood to the lungs

ā†³ Right atrium

ā†³ Right ventricle- pumps blood to the lungs

ā†³ Pulmonary artery- takes deoxygenated blood to the lungs

ā†³ Lungs

ā†³ Pulmonary vein- brings deoxygenated blood from the lungs

ā†³ Left atrium

ā†³ Left ventricle- pumps blood around the body

ā†³ Aorta- carries oxygenated blood to the body

<p>ā†³ Vena carva- brings deoxygenated blood to the lungs</p><p>ā†³ Right atrium</p><p>ā†³ Right ventricle- pumps blood to the lungs</p><p>ā†³ Pulmonary artery- takes deoxygenated blood to the lungs</p><p>ā†³ Lungs </p><p>ā†³ Pulmonary vein- brings deoxygenated blood from the lungs</p><p>ā†³ Left atrium</p><p>ā†³ Left ventricle- pumps blood around the body</p><p>ā†³ Aorta- carries oxygenated blood to the body </p>
2
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Why is the heart discribed as a double circularory system?

ā†³ As it pumps twice for every circuit around the body

3
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What is conary heart disease caused by?

ā†³ A build up of fatty material in the conary arteries making them narrow and reducing blood flow

4
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How do you help someone with coronary heart disease?

ā†³ Stents to keep the coronary ateries open

5
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How do you help someone with heart failure?

ā†³ Artifical hearts before a donor heart becomes availabe for a heart transplant

6
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Why do people with faulty valves feel breathlessness?

ā†³ As valves do not fully open making the heart less efficient

7
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How do you help someone with faulty valves?

ā†³ Biological valves (animals) or mechanical valves

8
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What does the artery do and what is itā€™s structure?

Function

ā†³ Carries blood away from the heart (high pressure)

Structure

ā†³ Thick muscular and elastic walls

ā†³ The walls can stretch and withstand high pressure

ā†³ Small lumen

<p>Function</p><p>ā†³ Carries blood away from the heart (high pressure)</p><p></p><p>Structure</p><p>ā†³ Thick muscular and elastic walls</p><p>ā†³ The walls can stretch and withstand high pressure</p><p>ā†³ Small lumen</p>
9
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What does the vein do and what is itā€™s structure?

Function

ā†³ Carries blood to the heart (low pressure)

Structure

ā†³ Have valves to stop blood flowing the wrong way

ā†³ Thin walls

ā†³ Large lumen

10
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What does the caillary do and what is itā€™s structure?

Function

ā†³ Carries blood to tissues and cells

ā†³ Connects arteries and veins

Structure

ā†³ One cell thick- short diffusion distance between blood and tissue

ā†³ Very narrow lumen

11
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What is the pathway of air in the lungs?

ā†³ Into body through mouth/nose

ā†³ Down trachea

ā†³ Into brochioles

ā†³ Into aveoli

ā†³ Oxygen diffuses into blood in the network of capillaries over the surface of the aveoli