Introduction to Blood

Question 1

What volume is blood?

Answer 1

5 litres

Question 2

What is job of arteries?

Answer 2

Brings oxygenated blood from heart to organs and tissues

Question 3

What is job of veins?

Answer 3

Brings deoxygenated blood from organs and tissues to heart, followed by the lungs for reoxygenation

Question 4

What are the exceptions to arteries and veins?

Answer 4

Pulmonary artery carries deoxygenated blood

Pulmonary vein carries oxygenated blood

Question 5

How much blood does heart pump per minute?

Answer 5

5 litres

Question 6

Describe one cycle of circulatory system

Answer 6

1. Deoxygenated blood from tissues and organs is collected via the vena cava into the right atrium
2. Right ventricle then pumps blood through the pulmonary arteries to the lungs where reoxygenation happens
3. Blood collected through pulmonary veins into left atrium
4. Left ventricle pumps blood via aorta back to tissues and organs

Question 7

What is job of valves?

Answer 7

Prevents back flow of blood

Question 8

Why is left ventricle thickest of heart chambers?

Answer 8

Responsible for pumping oxygenated blood all over body

Question 9

Why is left ventricle thickest of heart chambers?

Answer 9

Responsible for pumping oxygenated blood all over body

Question 10

Where does the right ventricle pump blood?

Answer 10

Solely to the lungs for repxygenation