The Circulatory System: blood vessels & pulse

Question 1

Name the 3 main types of blood vessel in your body

Answer 1

Arteries, veins, capillaries

Question 2

Which vessels carries blood under high pressure?

Answer 2

Arteries

Question 3

Why do arteries have thick muscular walls?

Answer 3

To cope with high blood pressure

Question 4

Which vessels carry blood TO the heart?

Answer 4

Veins

Question 5

Which vessels carry blood AWAY from the heart?

Answer 5

Arteries

Question 6

What is the largest blood vessel in the body?

Answer 6

Aorta

Question 7

True or false: The aorta is the largest vein in your body

Answer 7

False

Question 8

Where does the aorta start?

Answer 8

In the left ventricle

Question 9

Why are the walls of veins not capable of stretching or contracting too much?

Answer 9

The walls are less muscular since they carry blood at lower pressure

Question 10

What are varicose veins?

Answer 10

Veins that have swelled and bulged because valves are not functioning properly and blood leaks backwards

Question 11

What are the valves for?

Answer 11

They open and close to assist the return of blood to the heart

Question 12

What is the function of capillaries?

Answer 12

They link arteries to veins

Question 13

True of false: Walls of capillaries are only one cell thick

Answer 13

True

Question 14

What materials move out of the capillaries and into the body’s cells?

Answer 14

Oxygen, nutrients and other materials

Question 15

What do capillaries pick up?

Answer 15

Carbon dioxide, waste and other materials. We exhale the carbon dioxide.

Question 16

What are the smallest blood vessels called?

Answer 16

Capillaries