(a)[5]
Choose words from the list to label Fig. 5.1. Not every word has to be used.
(b)[1]
State the name of the body part through which air enters and leaves.
(c)[3]
Complete the statements about the differences between inspired air and expired air. Inspired air contains [BLANK] oxygen than expired air. Inspired air contains [BLANK] carbon dioxide than expired air. The concentration of water [BLANK] in inspired and expired air is not constant.
(d)[1]
Carbon dioxide is one component of both inspired and expired air. State the name of the chemical used to test for carbon dioxide.