medical MCQs – Page 209

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

4161. In which of the tooth is the mesiodistal measurements is greater lingually than facially________________?
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A. Maxillary 1st molar

B. Mandibular 1st premolar

C. Mandibular 2ndpremolar

D. Maxillary 1stpremolar

4162. The total number of cingula in each dentition is_______________?
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A. 32

B. 24

C. 6

D. 12

4163. Glucocorticoids decrease inflammatory reaction by reducing_______________?
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A. Release of histamine

B. Neutrophils

C. Fibroblastic activity

D. Activity of histamine

4164. Lacrimation is affected when facial nerve is injured at _____________?
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A. A & B

B. Sphenopalatine ganglions

C. Geniculate ganglion

D. At foramen spinosum

4165. The decreased phosphate level seen in hyper parathyroidism is due to ________________?
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A. Increased loss of phosphate in urine

B. Decreased intestinal phosphate absorption

C. Increased calcium excretion

D. Decreased renal phosphate absorption

4166. The number of line angles a permanent maxillary central incisor is_____________?
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A. Two

B. Six

C. Four

D. Eight

4167. In maxillary 1st permanent molar, the 2 obtuse angles are________________?
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A. Distofacial and mesiolingual

B. Mesiolingual and mesiofacial

C. Mesiofacial and distolingual

D. Distofacial and mesiofacial

4168. If the pulp of a single rooted tooth canal were triangular in cross section with the base of the triangle located facially and the apex lingually with a longer mesial side than distal side; the tooth most likely is_____________?
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A. Mandibular central incisor

B. Maxillary central incisor

C. Mandibular lateral incisor

D. Maxillary second premolar

4169. The primary site of action of antidiuretic hormone is on the_______________?
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A. Osmoreceptors in the hypothalamus

B. Afferent arterioles of the glomeruli

C. Thirst center in the hypothalamus

D. Distal tubules and collecting ducts in the kidney

4170. Corner stones of dental arches are:
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A. Second molars

B. First premolars

C. First molars

D. Canines

4171. Hypoglossal nerve is ______________?
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A. A peripheral nerve

B. Mixed nerve

C. Purely motor

D. Purely sensory

4172. The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______________?
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A. Lingual grooves

B. Cusps

C. Roots

D. Marginal ridges

4173. The contact area on the distal surface of a maxillary first premolar should be placed in________________?
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A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure

B. Occlusal 3rd of proximal surface with facial embrasure greater than lingual embrasure

C. Occlusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure

D. Middle 3rd with facial embrasure greater than the lingual embrasure

4174. Insulin increases the activity of___________?
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A. Thiolase

B. HMG- CoA lyase

C. HMG. CoA reductase

D. HMG- CoA synthase

4175. According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
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A. 3-4 years

B. 3-5 years

C. 1 2 years

D. 2 3 years

4176. Endocrine disorder is the primary cause of______________?
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A. Pagets disease

B. Acromegaly

C. Albrights syndrome

D. Fibrous dysplasia

4177. In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?
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A. Line connecting mesial with lingual is longest

B. Angle at the mesio facial canal is obtuse

C. Line connecting distal with lingual is longest

D. Line connecting mesial with distal is longest

4178. following are the features of cretinism, except_____________?
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A. Idiotic look

B. Pot- belly

C. Stunted growth

D. Normal intelligence

4179. Aldosterone production is controlled by _____________?
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A. Posterior pituitary gland

B. Hypothalamus

C. Adrenal gland

D. Anterior pituitary gland

4180. Which of the following is true of permanent first molars occlusal surface_____________?
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A. Rhomboidal shape in maxillary molars and hexagonal shape in Mandibular molars

B. Mandibular molar has 1 major fossa, 2 minor fossa, 5 triangular ridges and 4 grooves

C. Maxillary molar has 2 major fossa, 2 minor fossa, 4 triangular ridges,1 oblique ridge and 5 grooves

D. All of the above

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