(a(i))[2]
Three arteries are labelled on Fig. 7.1. State the names of two other kinds of blood vessel.
(a(ii))[2]
Describe the structure found in an artery.
(b(i))[3]
Describe the meaning of the term coronary heart disease and suggest why the heart muscle tissue has died.
(b(ii))[3]
State three other factors that raise the risk of a person developing coronary heart disease.