Answer:
The correct answer is - block the reuptake of norepinephrine and serotonin into the terminals.
Step-by-step explanation:
Tricyclic antidepressants drugs help in increasing the levels of hormones such as norepinephrine and serotonin, two neurotransmitters. The level of these hormones are increased by blocking the reuptake of these neurotansmitters and hormones back to axon terminal.
Reuptake of neurotansmitters and chemical messangers is the general mechanism of the balancing the horone levels in the body.