Which of the following statements is correct?
(a) Some tranquilizers function by inhibiting the enzymes which catalyse the degradation of noradrenaline
(b) Tranquilizers are narcotic drugs
(c) Tranquilizers are chemical compounds that do not affect the message transfer from nerve to receptor
(d) Tranquilizers are chemical compounds that can relieve Pain and fever
Answer (a). Tranquilizers are used for the treatment of stress, fatigue, mild and severe mental diseases. They relieve anxiety, stress, irritability or excitement by Inducing a sense of well being. Noradrenaline is one of the several neurotransmitters which pray an important role In mood changes.
If the level of noradrenaline In the body is low for some reasons. then the message transfer process becomes slow and the person suffers from depression. In such cases, antidepressant drugs are used. These drugs inhibit the enzymes which catalyze the degradation of noradrenaline.
If the enzyme is inhibited. then the neurotransmitter noradrenaline is slowly metabolized and can thus activate the receptor for longer periods thereby counteracting the effect of depression. Tranquilizers form an essential component of sleeping pills.