Injections Into the Circular Flow These flows out of the circular flow of income will be counterbalanced by flows back in. These flows are known as injections. These may take the form of Other firms. ie investment expenditure The government, ie government expenditure Foreigners ie export expenditureInjections Into the Circular Flow These flows out of the circular flow of income will be counterbalanced by flows back in. These flows are known as injections. These may take the form of: ▪Other firms, ie investment expenditure. ▪The government, ie government expenditure. ▪Foreigners, ie export expenditure