37. Fluoxetine is a________ transport blocker
(a) Serotonin
(b) Norepinephrine
(c) Dopamine
(d) GABA

38. Vivactil (protriptyline) is used mainly as a (an)
(a) Analgesic
(b) Muscle relaxant
(c) Cardiotonic
(d) Antidepressant

39.Local anaesthetics block nerve conduction by
(a) Blocking all cation channels in the neuronal membrane
(b) Hyperpolarizing the neuronal membrane
(c) Interfering with depolarization of the neuronal membrane
(d) Both (b) and (c)

40. Sensitivity of a nerve fibre to blockade by lidocaine depends on
(a) Whether the fibre is sensory or motor
(b) Whether the fibre is myelinated ornon myelinated
(c) Internodal distances in the fibre
(d) Both (b) and (c)

41. Which sensation is blocked first by low concentrations of a local anaesthetic ?
(a) Temperature

(b) Pain
(c) Touch
(d) Deep pressure

42. Following are the MAO-inhibitors, except
(a) Tranylcypromine
(b) Nomifensine
(c) Moclobemide
(d) Isocarboxid

43.The local anaethetic with the longest duration of action is
(a) Procaine
(b) Chloroproacine
(c) Lidocaine
(d) Dibucaine