Circulatory system blood vessels

Question 1

three types of blood vessels

Answer 1

capillaries, arteries, veins

Question 2

What do arteries

Answer 2

Carry blood away from the heart

Question 3

What do veins do

Answer 3

Carry blood to the heart

Question 4

What do Capillaries do

Answer 4

involved in the exchange of materials at tissues

Question 5

How are arteries adapted

Answer 5

• the walls are strong and elastic as the blood gets pumped out at a high pressure
• The walls are thick compared to the lumen
• contain thick layers of muscle to make them strong
• they have elastic fibres which allow them to stretch and spring back

Question 6

How are capillaries adapted

Answer 6

• tiny and carry blood really close to every cell to exchange substances with them
• have permeable walls so substances can diffuse in and out
• They supply food and water and take out co2
• Their walls are only one cell thick to increase the rate of diffusion

Question 7

How are veins adapted

Answer 7

• have thinner walls than arteries as the blood is pumped out a lower pressure
• The lumen is bigger to help the blood flow
• they have valves to help the blood flow in the right direction