(a)[4]
Explain how the structures of the heart make sure that blood moves in one direction. Include the names of these structures in your answer.
(b)[6]
Complete Table 5.1 by: naming the blood vessel type; stating the letter for that blood vessel type from Fig. 5.1.
(c)[2]
State the names of the blood vessels that supply blood to the: kidneys; heart muscle.
(d)[4]
Describe how blockages in the vessels that supply blood to the heart muscle can be treated.