(a(i))[1]
On Fig. 3.1, place an X to show the position of the left atrium.
(a(ii))[2]
On Fig. 3.1, use a label line and the correct name to identify a structure that allows blood to flow in one direction only.
(a(iii))[1]
State two letters that show arteries in Fig. 3.1.
(a(iv))[1]
State the name of the structure that separates the left and right sides of the heart.
(a(v))[1]
State the name of the main tissue from which the wall of the heart is made.
(b(i))[3]
Using the information in Fig. 3.2, describe the similarities and differences between the percentages of males and females with CHD.
(b(ii))[3]
State three risk factors for CHD that are not shown in Fig. 3.2.