(a)[2]
Name two blood vessels on the diagram that carry oxygenated blood.
(b(i))[1]
Label, using the letter X on the heart diagram, the position of this valve.
(b(ii))[4]
Explain how this medical condition affects blood flow when the left ventricle contracts and relaxes.
(b(iii))[3]
Describe and explain how this condition affects the person's ability to exercise.
(c)[4]
Suggest how the cells of the tissue are changed by the chemical treatment and explain how this prevents rejection by the human body.