(a)[2]
Identify the structures marked F and G on Fig. 5.1.
(b)[2]
Place the words into the boxes in the correct order to show the structures inspired gases pass through on their way from outside the body to the blood. Words given: alveoli, bronchiole, bronchus, trachea. Sequence shown: nose → [BLANK] → [BLANK] → [BLANK] → [BLANK] → blood.
(c(i))[3]
Complete the table showing how expired air differs from inspired air. Select the word or phrase from the list: higher, lower, the same.
(c(ii))[1]
State the name of the substance used to test for carbon dioxide gas.
(d(i))[1]
State the name of one other organ that excretes waste substances.
(d(ii))[3]
Circle three other substances that humans excrete. Options given: amino acids, glycerol, haemoglobin, ions, mucus, starch, urea, water.