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Biology Yr 8 > The circulatory system > Flashcards

The circulatory system Flashcards

1
Q

What are the three types of blood vessels?

A

Arteries, veins, and capillaries

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2
Q

What is the primary function of the heart?

A

Pumps blood around the circulatory system

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3
Q

What does the circulatory system consist of?

A

The heart and all the blood vessels in the body

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4
Q

What do arteries do?

A

Carry blood away from the heart

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5
Q

What pressure is blood in arteries under?

A

High pressure

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6
Q

What are the characteristics of artery walls?

A

Thick muscle, elastic

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7
Q

What do veins do?

A

Carry blood back to the heart

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8
Q

What pressure is blood in veins under?

A

Lower pressure

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9
Q

What are the characteristics of vein walls?

A

Thinner muscle, less elastic

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10
Q

What prevents blood from flowing backwards in veins?

A

One-way valves

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11
Q

What are capillaries?

A

Tiny blood vessels that carry substances to and from cells

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12
Q

What substances do capillaries carry?

A
  • Oxygen
  • Glucose
  • Waste products like carbon dioxide
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13
Q

What is the function of capillary walls?

A

Allow substances to move by diffusion

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14
Q

What are the two types of chambers in the heart?

A

Atria and ventricles

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15
Q

What are the top chambers of the heart called?

A

Atria

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16
Q

What are the bottom chambers of the heart called?

A

Ventricles

17
Q

What is the role of the atria in the heart?

A

Collect blood and pump it to the ventricles

18
Q

What is the role of the ventricles in the heart?

A

Pump blood to the body

19
Q

What is a double circulatory system?

A

Blood passes through the heart twice on each loop around the body

20
Q

What is the path blood takes in the double circulatory system?

A

Heart to lungs to heart to the rest of the body

21
Q

What is the figure of eight system?

A

Another term for the double circulatory system

22
Q

Fill in the blank: Capillaries join your arteries to your _______.

A

Veins

Biology Yr 8 (5 decks)

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