State the names of the structures labelled Q, T, W and X.
State the name of structure V on Fig. 6.1 and describe its function.
State why the fish circulation is called a single circulation.
Explain the advantages of the double circulation of the mammal.
State the name of the blood vessels that supply the heart muscle.
State one way in which blockages in these blood vessels can be treated.
State the structures in the lungs where oxygen passes into the blood from the air.
State the site of filtration of blood in the kidneys.
State the name of the process in which products of digestion move into cells and are used to become part of the cells.
State the name of the process in which excess amino acids are broken down in liver cells to produce ammonia.
State the name of the organ that releases oestrogen into the blood.