Use the information in Fig. 3.1 to finish Table 3.1.
State what the term hormone means.
The box on the left contains the start of a sentence. The boxes on the right contain some possible sentence endings. Draw two lines from the left-hand box to the right-hand boxes to make two correct sentences. Left-hand box: "Hormones" Right-hand boxes: "work more slowly than the nervous system does." "are nerve impulses." "have effects that last for a shorter time than the effects of the nervous system." "take part in homeostasis."
Complete the sentences about the effects of adrenaline. Circle the correct word in each group of three bold words. Adrenaline is secreted to prepare the body for action / relaxation / sleep. The heart rate increases to pump more blood containing carbon dioxide / oxygen / nitrogen to the muscles. The breathing rate increases to excrete more alcohol / carbon dioxide / urea from the body. The diameter of the pupils increases to let in more / less / the same amount of light.