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

Flashcards in The Heart Deck (25)
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1

What does the right side of the heart do?

Pumps deoxygenated blood to the lungs

2

What does the left side of the heart do?

Pumps oxygenated to the lungs

3

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

Thicker and more muscular

4

Why is the left ventricle thicker and more muscular?

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

5

How are ventricles different to the atria?

Thicker walls

6

Why do ventricles have thicker walls than atria?

- They have to push blood out the heart
- Atria only have to push blood a short distance into ventricles

7

What is the purpose of the atrioventricular valves?

Stops blood flowing back into atria when ventricles contract

8

Where are the atrioventricular valves?

Between the atria and the ventricles

9

What are the two types of atrioventricular valve?

- Tricuspid
- Bicuspid

10

What side of the heart is the tricuspid valve?

Right side

11

What side of the heart is the bicuspid valve?

Left side

12

Where are the semi lunar valves?

Between ventricles and pulmonary artery + aorta

13

What is the purpose of the semi lunar valves?

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

14

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

- Four main vessels attached to the heart
- Left and right atria
- Left and right ventricles
- Coronary arteries

15

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

- Arteries: thick and rubbery
- Veins: much thinner

16

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

- Ventricles cut open using scalpel
- Atria cut open using scalpel

17

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

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

18

What does the aorta do?

Carries oxygenated blood from left ventricle to body

19

What does the pulmonary artery do?

Carries oxygenated blood from lungs to left atrium

20

What does the vena cava do?

Carries deoxygenated blood from body to right atrium

21

What does the pulmonary vein do?

Carries oxygenated blood from lungs to left atrium

22

What does the left atrium do?

Pumps oxygenated blood from pulmonary vein to left ventricle

23

What does the right atrium do?

Pumps deoxygenated blood from vena cava to right ventricle

24

What does the left ventricle do?

Pumps oxygenated blood to the body through aorta

25

What does the right ventricle do?

Pumps deoxygenated blood to the lungs through pulmonary artery