7.4 The structure of the heart

Question 1

what type of blood does the left side of the heart deal with?

Answer 1

oxygenated

Question 2

what type of blood does the right side of the heart deal with?

Answer 2

deoxygenated

Question 3

what are the two types of chambers in the heart?

Answer 3

atrium
ventricle

Question 4

what is the atrium?

Answer 4

thin-walled and elastic
stretches as it collects blood

Question 5

what is the ventricle?

Answer 5

same as atrium but with a thicker wall

Question 6

why do ventricles have thicker walls compared to the atria?

Answer 6

has to contract strongly to pump blood
- to the lungs
- to the rest of the body

Question 7

What are the two valves between the atria and the ventricles?

Answer 7

• left atrioventricular (bicuspid valve)
• right atrioventricular (tricuspid valve)

Question 8

What does the aorta connect to? What blood does it carry?

Answer 8

• left ventricle
• carry oxygenated blood to all parts of the body (not lungs)

Question 9

What does the vena cava connect to? What blood does it carry?

Answer 9

• right atrium
• deoxygenated blood from the tissues

Question 10

What does the pulmonary artery connect to? What blood does it carry?

Answer 10

• right ventricle
• deoxygenated blood to the lungs

Question 11

What does the pulmonary vein connect to? What blood does it carry?

Answer 11

• left atrium
• oxygenated blood back from the lungs

Question 12

What blood vessels supply the heart muscle with oxygen?

Answer 12

Coronary arteries that branch off the aorta

Question 13

What other way is heart attack called?

Answer 13

Myocardial infarction