BLOOD VESSELS

Question 1

What are arteries?

[5]

Answer 1

Large layer of smooth muscle and elastic tissue 
Oxygenated blood (except pulmonary)
High blood pressure 
Transport blood from heart to muscles 
Regulate blood flow

Question 2

What are arterioles?

[5]

Answer 2

Large layer of smooth muscle with a ring of smooth muscle
Oxygenated blood (except pulmonary)
High blood pressure
Regulate blood flow 
Control blood pressure

Question 3

What are capillaries?

[4]

Answer 3

One cell thick
Where there’s gas exchange
Low blood pressure
Gas, nutrient and waste exchange

Question 4

What are venules?

[4]

Answer 4

Small layer of smooth muscle
De-oxygenated blood
Low blood pressure
Maintain the slow flow of blood

Question 5

What are veins?

[6]

Answer 5

Small layer of smooth muscle 
One-way pocket valves 
De-oxygenated blood 
Low blood pressure 
Maintain the slow flow of blood 
Prevent back flow