Medical Archives

231. In multirooted teeth, formation of multiple roots is due to presence of_____________?

A. Epithelial diaphragm

B. Cell rests of Malassez

C. Toot bud division or bell stage

D. None of the above

✅ The correct answer is option A. Epithelial diaphragm.

232. Not true about T3 and T4 is______________?

A. T3 more potent than T4

B. T4 binds to prealbumin

C. Absorption of T4 is more than T3

D. Concentration of T4 is more than T3

✅ The correct answer is option B. T4 binds to prealbumin.

233. First change to occur after nerve cut is_______________?

A. Schwan cell mitosis

B. Axonal sprouting

C. Myelin sheath degeneration

D. Nuclear disintegration

✅ The correct answer is option C. Myelin sheath degeneration.

234. The reabsorption of sodium chloride is increased in proximal convoluted tubules by hormones secreted from______________?

A. Anterior pituitary

B. Posterior pituitary

C. Adrenal cortex

D. Adrenal medulla

✅ The correct answer is option C. Adrenal cortex.

235. The conversion of prothrombin to thrombin, the factor participate along with calcium is______________?

A. Labile factor

B. Stable factor

C. Fibrin

D. Thromboplastin

✅ The correct answer is option A. Labile factor.

236. The only sugar normally absorbed in the intestine against a concentration gradient is_____________?

A. Xylose

B. Mannose

C. Glucose

D. Galactose

✅ The correct answer is option C. Glucose.

237. The hertwig’s epithelial root shealth is essential to development of the root because it_______________?

A. Gives rise to cementoblasts that produce cementum of the root

B. Moulds the shape of roots and stimulates differentiation of odontoblasts

C. Given rise to odontoblasts that lay down dentin of the root

D. Remians as an essential constituents of the periodontal ligament

✅ The correct answer is option B. Moulds the shape of roots and stimulates differentiation of odontoblasts.

238. Unmyelinated fibres differ from myelinated fibers in that they ______________?

A. Have increased excitability

B. Have to nodes of Ranvier

C. Have no power of regeneration

D. Have no association of Schwann cells

✅ The correct answer is option B. Have to nodes of Ranvier.

239. The term diphydont means____________?

A. Second dentition

B. Two same sets of dentition

C. Two separate sets of dentition

D. More than two sets of dentition

✅ The correct answer is option C. Two separate sets of dentition.

240. Maximum absorption of bile occurs at_____________?

A. Jejunum

B. Duodenum

C. Ileum

D. Colon

✅ The correct answer is option C. Ileum.