Question

Which characteristics of capillaries cause restriction of blood flow?

high blood pressure

small diameters

thin walls

short lengths

Answer 1

Which characteristics of capillaries cause restriction of blood flow?

- small diameters

Answer 2

B. Small diameters is the characteristic of capillaries that causes restriction of blood flow.
Since it is a narrow passage, not a lot of blood can pass through it at the same time.