Arterioles

Question 1

Arterioles

Answer 1

arteries branch into narrower blood vessels called arterioles which transport blood into capillaries

Question 2

Arterioles can contract and partially cut off blood flow to

Answer 2

specific organs

Eg. During exercise blood flow to the stomach and intestine is reduced which allows for more blood to reach the muscles

Question 3

Unlike arteries, arterioles have a lower proportion of…………. and a large proportion of

Answer 3

lower proportion of elastic fibres and a large number of muscle cells

Question 4

The presence of muscle cells allows them to ……..

Answer 4

contract and close their lumen to stop blood flow