section 2: transport in animals - topic 2: blood vessels

Question 1

how many types of blood vessels are there?

Answer 1

5

Question 2

what are the 5 types of blood vessels?

Answer 2

arteries
arterioles
capillaries
venules
veins

Question 3

what is the function of arteries?

Answer 3

they carry blood from the heart to the rest of the body

Question 4

how does the structure of arteries help maintain high pressure?

Answer 4

• they have thick and muscular walls, as well as elastic tissue which stretches and recoils as the heart beats
• the inner lining (endothelium) is folded, allowing the artery to expand

Question 5

which arteries carry oxygenated blood and which carry deoxygenated blood?

Answer 5

all arteries carry oxygenated blood, except pulmonary arteries which take deoxygenated blood to the lungs

Question 6

what are arterioles?

Answer 6

they are what arteries branch into (and are much smaller than arteries)

Question 7

what is the structure of arterioles?

Answer 7

like arteries, they have a layer of smooth muscle, but they have less elastic tissue

Question 8

how are arterioles able to control the amount of blood flowing to tissues?

Answer 8

because the smooth muscle allows them to expand or contract