Medical Archives

2161. Which of the following represents most dangerous situation_____________?

A. Rh+ ve mother, who is bearing 2nd Rh+ ve child

B. Rh+ ve mother, bearing her 2nd + ve child

C. Rh+ ve mother, bearing her 1st Rh – ve child

D. Rh – ve mover, bearing her 1stRh + ve child

✅ The correct answer is option B. Rh+ ve mother, bearing her 2nd + ve child.

2162. The optic nerve terminates in the________________?

A. Thalamus

B. Pituitary gland

C. Medulla oblangata

D. None of the above

✅ The correct answer is option C. Medulla oblangata.

2163. Elongated rete pegs are seen in______________?

A. Alveolar mucosa

B. Floor of the mouth

C. Attached gingiva

D. Buccal mucosa

✅ The correct answer is option C. Attached gingiva.

2164. A six- year molar begins to calcify at______________?

A. Six months IU

B. At birth

C. 1 years after birth

D. 3 years age

✅ The correct answer is option B. At birth.

2165. The fusion of two bony structures with a ligament is known as_______________?

A. Synostosis

B. Synchondrosis

C. Diarthrosis

D. syndesmosis

✅ The correct answer is option D. syndesmosis.

2166. Mercury is toxic because it_____________?

A. Complexes with hemoglobinto form methemoglobin

B. Inhibits hemoglobin synthesis, producing anemia

C. Inhibits anaerobic glycolysis

D. Binds to sulfhydryl groups

✅ The correct answer is option D. Binds to sulfhydryl groups.

2167. The type of tertiary dentin which contains cellular inclusions is found in_____________?

A. Sclerotic dentin

B. Mantle dentin

C. Predentin

D. Osteodentin

✅ The correct answer is option D. Osteodentin.

2168. Heme in haemoglobin is____________?

A. Between Helix C and D

B. Surrounded by non polar environment

C. Bonded to E7 histidine

D. Protoporophyrin IX

✅ The correct answer is option D. Protoporophyrin IX.

2169. Within the RBC hypoxia stimulates glycolysis by which of the following regulating pathways ?

A. Hypoxia stimulates pyruvate dehydrogenase by increased, 2, 3DPG

B. Hypoxia inhibits hexokinase

C. Hypoxia stimulates release of all glycolytic enzymes from Band 3 on RBC membrane

D. Activation of the regulatory enzymes by high PH

✅ The correct answer is option C. Hypoxia stimulates release of all glycolytic enzymes from Band 3 on RBC membrane.

2170. Floor of mouth is made by which muscle ___________________?

A. Genioglossus

B. Geniohyoid

C. Mylohyoid

D. Masseter

✅ The correct answer is option C. Mylohyoid.