Supplying the cell

Easy

Which row correctly describes structural features of veins, arteries, and capillaries?

	Valves present in veins	Thick walls in arteries	Valves present in capillaries
A	yes	yes	no
B	yes	no	yes
C	no	yes	no
D	no	no	yes

Row A

Row B

Row C

Row D

Supplying the cell Questions