Medical Archives

2791. All are true about the striae of retzius except___________?

A. Constitute the rest lines with in the enamel rods

B. Have high inorganic content

C. They are areas of increased porosity

D. Allow the movement of water and small ions

✅ The correct answer is option B. Have high inorganic content.

2792. Porcelain denture teeth________________?

A. Have a higher coefficient of thermal expansion than acrylic teeth:

B. Have a lower abrasion resistance than enamel

C. Should be used where the inter dental clearance is small

D. Have a higher abrasion resistance than gold

✅ The correct answer is option D. Have a higher abrasion resistance than gold.

2793. Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?

A. Only molars

B. All teeth except third molars

C. 1,2,4,5,6,7 in all quadrants

D. 1,2,6 in all quadrants

✅ The correct answer is option D. 1,2,6 in all quadrants.

2794. In renal glycosuria, the renal threshold for glucose is_______________?

A. Low

B. High

C. Same

D. Greatly increased

✅ The correct answer is option A. Low.

2795. The attached apparatus of tooth is composed of______________?

A. Gingiva, cementum and alveolar bone

B. Gingiva and cementum

C. Cementum and periodontal ligament

D. Peridontal ligament the cementum and the alveolar bone

✅ The correct answer is option D. Peridontal ligament the cementum and the alveolar bone.

2796. Hertwig’s epithelial root sheath is made up of_______________?

A. Outer and inner enamel epithelium

B. Stratum intermedium

C. Stellate reticulum

D. Hyaline layer of Hopewell-smill

✅ The correct answer is option A. Outer and inner enamel epithelium.

2797. Following are the changes during accommodation except_______________?

A. Constriction of pupil

B. Dilatation of pupil

C. Convergence of eye ball

D. Increase in the anterior curvature of lens

✅ The correct answer is option B. Dilatation of pupil.

2798. Facial muscles are derived from_________________?

A. 1st branchial arch

B. 2ndbranchial arch

C. 3rdbranchial arch

D. 4thbranchial arch

✅ The correct answer is option B. 2ndbranchial arch.

2799. 1 molelcule of glucose forms _______ molecules of pyruvate?

A. 1

B. 2

C. 3

D. 4

✅ The correct answer is option B. 2.

2800. The patient suffered from hypogondism, failure to thrive, lose of taste and unable to maintain stability. This shows the deficiency of_____________?

A. Zinc

B. Chromium

C. Copper

D. Potassium

✅ The correct answer is option A. Zinc.