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Bio 1: Lifestyle, Health and Risk > The Heart > Flashcards

The Heart Flashcards

1
Q

What does the right side of the heart do?

A

Pumps deoxygenated blood to the lungs

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2
Q

What does the left side of the heart do?

A

Pumps oxygenated to the lungs

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3
Q

How is the left ventricle different to the right ventricle physically?

A

Thicker and more muscular

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4
Q

Why is the left ventricle thicker and more muscular?

A

Has to pump blood to the rest of the body, needs more force

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5
Q

How are ventricles different to the atria?

A

Thicker walls

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6
Q

Why do ventricles have thicker walls than atria?

A
  • They have to push blood out the heart

- Atria only have to push blood a short distance into ventricles

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7
Q

What is the purpose of the atrioventricular valves?

A

Stops blood flowing back into atria when ventricles contract

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8
Q

Where are the atrioventricular valves?

A

Between the atria and the ventricles

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9
Q

What are the two types of atrioventricular valve?

A
  • Tricuspid

- Bicuspid

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10
Q

What side of the heart is the tricuspid valve?

A

Right side

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11
Q

What side of the heart is the bicuspid valve?

A

Left side

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12
Q

Where are the semi lunar valves?

A

Between ventricles and pulmonary artery + aorta

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13
Q

What is the purpose of the semi lunar valves?

A

Stops blood flowing back into ventricles from aorta and pulmonary artery after ventricles contract

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14
Q

What can be seen in an external examination of the heart?

A
  • Four main vessels attached to the heart
  • Left and right atria
  • Left and right ventricles
  • Coronary arteries
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15
Q

What is the difference between the way blood vessels feel in an external examination?

A
  • Arteries: thick and rubbery

- Veins: much thinner

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16
Q

What are the steps in an internal examination of the heart?

A
  • Ventricles cut open using scalpel

- Atria cut open using scalpel

17
Q

What can be seen in an internal examination of the heart?

A
  • Wall of left ventricle - thicker than the right
  • Atria walls thinner than ventricle walls
  • Structures of AV and semi lunar valves
18
Q

What does the aorta do?

A

Carries oxygenated blood from left ventricle to body

19
Q

What does the pulmonary artery do?

A

Carries oxygenated blood from lungs to left atrium

20
Q

What does the vena cava do?

A

Carries deoxygenated blood from body to right atrium

21
Q

What does the pulmonary vein do?

A

Carries oxygenated blood from lungs to left atrium

22
Q

What does the left atrium do?

A

Pumps oxygenated blood from pulmonary vein to left ventricle

23
Q

What does the right atrium do?

A

Pumps deoxygenated blood from vena cava to right ventricle

24
Q

What does the left ventricle do?

A

Pumps oxygenated blood to the body through aorta

25
Q

What does the right ventricle do?

A

Pumps deoxygenated blood to the lungs through pulmonary artery

Bio 1: Lifestyle, Health and Risk (9 decks)

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