7.4 the structure of the heart

Question 1

describe the appearance of the heart

Answer 1

• 2 separate pumps
• left deals with oxygenated blood from the lings
• right deals with deoxygenated blood from the body
• each pump has 2 chambers: atrium and ventricle

Question 2

where is the aorta connected to?

Answer 2

• left ventricle → tissues

Question 3

where is the vena cava connected to?

Answer 3

• tissues → right atrium

Question 4

where is the pulmonary artery connected to?

Answer 4

• right ventricle→ lungs

Question 5

where is the pulmonary vein connected to?

Answer 5

• lungs → left atrium

Question 6

explain why the heart is made up of two adjacent pumps

Answer 6

• to increase its pressure before it is distributed to the rest of the body
• as capillaries have very low pressure

Question 7

explain how the structure of the heart is related to its function.

Answer 7

• right ventricle pumps blood only to the lungs
• thinner muscular wall than the left ventricle
• left ventricle pumps blood to the rest of the body
• thicker muscular wall
• enabling it to contract to create enough pressure to reach everywhere