(a(i))[7]
Table 6.1 gives the names of some parts of the human gas exchange system, their functions and the letters in Fig. 6.1 used to label the parts. Complete Table 6.1.
(a(ii))[3]
Describe and explain how the alveoli are adapted for efficient gas exchange.
(b(i))[3]
Explain how the composition of inspired air differs from that of expired air.
(b(ii))[2]
State where this change is detected and how the body responds to it.
(b(iii))[1]
State the name of a solution used to test for carbon dioxide gas.