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JC Science > Chapter 6 - The Circulatory System > Flashcards

Chapter 6 - The Circulatory System Flashcards

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1
Q

What is our circulatory system made up of?

A
  • Blood
  • System of blood vessels
  • The heart
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2
Q

What are the 4 components of blood?

A

🔴Plasma

🔴Red blood cells

🔴White blood cells

🔴Platelets

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3
Q

What is plasma and what is its function?

A

Plasma is the liquid part of blood and it transports chemicals and heat around the body

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4
Q

What is the function of red blood cells?

A

Red blood cells contain haemoglobin which transports oxygen

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5
Q

What is the function of white blood cells?

A

White blood cells fight infections

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6
Q

What is the function of platelets?

A

Platelets help to form blood clots

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7
Q

What are the three main types of blood vessels?

A
  1. Arteries
  2. Veins
  3. Capillaries
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8
Q

What is the function of arteries?

A

To carry blood away from the heart

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9
Q

What is the function of veins?

A

To carry blood to the heart

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10
Q

What is the function of capillaries?

A

To allow materials to pass in and out of the blood

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11
Q

Describe the characteristics of an artery

A
  • Blood is under high pressure
  • Thick, strong walls
  • No valves
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12
Q

Describe the characteristics of a vein

A
  • Blood under low pressure.
  • Thinner, weaker walls
  • Have valves
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13
Q

Describe the characteristics of a capillary

A
  • Tiny blood vessels
  • Found between arteries and veins
  • Are a huge number of capillaries in human body
  • Very thin walls to allow materials to pass in and out of them
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14
Q

What is the function of the heart?

A

To pump blood around the body

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15
Q

What does the right ventricle do?

A

Pumps blood to the lungs

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16
Q

What are the 4 chambers of the heart?

A

❤️Right atrium
❤️Right ventricle
❤️Left atrium
❤️Left ventricle

17
Q

What does the left ventricle do?

A

Pumps blood all around the body

18
Q

What is the function of the vena cava?

A

Takes blood low in oxygen from the body to the right atrium

19
Q

What is the function of the pulmonary artery?

A

Takes blood low in oxygen from the right ventricle to the lungs

20
Q

What is the function of the pulmonary vein?

A

Takes oxygen rich blood from the lungs to the left atrium

21
Q

What is the function of the aorta?

A

Takes oxygen rich blood from the left ventricle to the body

22
Q

Each _________ causes a _____ of blood in the ________

A

Each heartbeat causes a pulse of blood in the arteries

23
Q

How can heart disease be avoided?

A
  • Exercise
  • healthy diet
  • not smoking
24
Q

Why does the human body need the circulatory system?

A

To transport materials from one place to another

JC Science (44 decks)

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