Circulatory System

Question 1

Top 2 chambers of heart

Answer 1

Right atrium and Left atrium

Question 2

Bottom 2 chambers of heart

Answer 2

Right ventricle and Left ventricle

Question 3

Veins/Arteries

Answer 3

Veins bring blood to the heart, Arteries take it away

Question 4

Pulmonary vein

Answer 4

Delivers oxygenated blood to the left atrium

Question 5

Why are the walls of the ventricle thicker than those of the atria?

Answer 5

They pump blood further and at a higher pressure

Question 6

Walls of the left ventricle are …… than the right

Answer 6

Thicker

Question 7

Pulmondary =
Renal =
Hapatic =

Answer 7

= Lungs
= Kidney
= Liver

Question 8

Heart attacks

Answer 8

Coronary arterys = blocked/obstruced

Question 9

Factors increasing chance of coronary heart disease

Answer 9

• Smoking
• Stress
• High fat diet
• Hereditary
• Lack of exercise
• Diabetes

Question 10

Coronary heart disease

Answer 10

Occurs when fatty deposits build up inside the coronary arteries, restricting blood flow and oxygen to the heart muscle, potentially leading to a heart attack.

Question 11

How is heart rate increased?

Answer 11

• Adrenaline
• When we excericise, muscles produce carbon dioxide
• Receptors in Aorta and carotid artery detect this
• Electrical impulses sent to medulla
• Accelorator nerve increases heart rate