Pharmacology explores the interactions between drugs and biological systems, as well as the body’s responses to these drugs. This discipline covers a wide range of topics, including the origins, chemical properties, biological effects, and therapeutic uses of drugs. The impact of drugs can range from therapeutic benefits to potential toxicity, and is influenced by various factors. GuruMCQs.com provides an extensive array of pharmacology MCQs, continuously updated to encompass a wide range of topics. These MCQs span various areas such as neuropharmacology, psychopharmacology, toxicology, clinical pharmacology, molecular and cellular pharmacology, and more. Curated from reputable pharmacology references, these MCQs serve as valuable resources for interviews, entrance exams, competitive assessments, and certifications, catering to individuals at all stages of their careers. Additionally, explore MCQson Dental Materials for further study.

41. Local anaesthetics act by inhibiting_____________?

A. Motor fibers only
B. Motor and sensory fibres
C. Only sensory fibres
D. None of the above

42. The drug not belonging to amide group_______________?

A. Procaine
B. Xylocaine
C. Lignocaine
D. Bupivacaine

43. The most important property in determining the induction of a general anaesthetic agent is_____________?

A. Alveolar exchage
B. Pulmonary ventilation
C. Solubility of anaesthetic in blood
D. solubility of anaesthetic in tissue

44. A dentist who first used ether as a general antithetic was_____________?

A. Martin
B. Morton
C. Morrison
D. Murray

45. Methemoglobinemia is a complication following the administration of_____________?

A. Lignocaine
B. Benzacaine
C. Prilocaine
D. Procaine

46. Which produces dissociative anaesthesia_____________?

A. Propanidid
B. Theiopentone sodium
C. Fentany droperodol
D. Ketamine

47. The organ most resistant to GA is______________?

A. Spinal Cord
B. Medulla oblonagata
C. Medullary cortex
D. Cerebrum

48. Which factor of the following contributes to short duration of anesthetic action of single dose thiopental_____________?

A. Rapid biotransformation
B. Rapid accumulation in body fat
C. High lipid solubility
D. Ability to enter and leave brain tissue every rapidly

49. Rapid onset of inhalational GA depends on____________?

A. Blood solubility
B. Cerebral blood flow
C. Partial pressure of GA
D. All of the above

50. Nitrous oxide is carried in the blood stream by_____________?

A. Haemoglobin
B. White blood cells
C. Red Blood cells
D. Serum