Blood Vessels

Question 1

What are blood vessels?

Answer 1

Hollow tubes carrying blood away or towards the heart

Question 2

What are arteries?

Answer 2

Carry blood away from the heart

They carry oxygenated blood away from the heart apart from pulmonary artery

Arterioles - smallest arteries

Question 3

What are veins?

Answer 3

Transport blood towards the heart

Smallest veins called venules

Question 4

What are capillaries?

Answer 4

Form a network of small vessels joining arteries to veins

Question 5

Structure of blood vessels 3 layers called…

Answer 5

Tunica intima - inner
Tunica media - middle
Tunica Adventitia- outer

Question 6

Tunica intima

Answer 6

Inner layer of blood vessel thin layer of smooth endothelial cells

Question 7

Tunica media

Answer 7

Middle layer of blood vessel muscular layer which contracts, narrows or closes the vessel

Question 8

Tunica adventitia

Answer 8

Outer layer of blood vessel fibrous connective tissue which supports the vessel

Question 9

What are valves?

Answer 9

Prevent back flow of blood