(a(i))[2]
Complete Table 3.1 by filling in the percentages of carbon dioxide and oxygen in inspired air and expired air.
(a(ii))[1]
Suggest a reason for this observation.
(b(i))[3]
Explain how capillary structure is linked to its function.
(b(ii))[1]
State the name of the component of blood that transports oxygen.
(b(iii))[1]
State the name of the blood vessel that carries blood from the heart towards the capillaries in the lungs.
(b(iv))[2]
State the position and function of cartilage in the breathing system.
(c(i))[1]
Using the information in Fig. 3.2, calculate the breathing rate at rest.
(c(ii))[1]
Using the information in Fig. 3.3, calculate the volume of air inspired in one breath at 25 seconds.
(c(iii))[4]
Explain how exercise affects the rate and depth of breathing in Fig. 3.2 and Fig. 3.3.