A. Incremental lines of retzius
B. Incremental lines of vonebner
C. Contour lines of owen
D. None of the above
✅ The correct answer is option C. Contour lines of owen.
Medical
True about direction of enamel rods______________?
A. They originate at right angle to dentin surface
B. They are almost vertical near the incisal edge (or) cusp tip areas
C. In the cervical third of deciduous crowns they are almost horizontal in direction
D. In cervical region of permanent teeth, they deviate in apical direction
✅ The correct answer is option E. All of the above.
Which of the following is the nerve of third branchial arch____________?
A. Facial nerve
B. Trigeminal
C. Vagus
D. Glossopharyngeal
✅ The correct answer is option D. Glossopharyngeal.
Which of the following arteries does not supply the circle of Willis ?
A. Anterior cerebral
B. Middle cerebral
C. Posterior – inferior cerebrat
D. Posterior communicating
✅ The correct answer is option C. Posterior – inferior cerebrat.
Colloidal osmotic pressure of plasma is by___________?
A. Albumin
B. Fibrinogen
C. Globulin
D. Prothrombin
✅ The correct answer is option A. Albumin.
Tongue movement has its primary effect on______________?
A. Palatoglossus arch
B. Facial musculature
C. Lips
D. Cheeks
✅ The correct answer is option A. Palatoglossus arch.
Cellular cementum and compact bone contain____________?
A. Sharpehy’s fibres and elastic fibres
B. Collagen fibres and blood vessels
C. Canaliculi and incremental lines
D. Lacunae and elastic fibres
✅ The correct answer is option C. Canaliculi and incremental lines.
On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ?
A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Mandibular second premolar
✅ The correct answer is option B. Mandibular central incisor.
Parasympathetic ganglion in head are_______________?
A. Three pairs
B. Four pairs
C. Five pairs
D. Two pairs
✅ The correct answer is option B. Four pairs.
Anchoring fibrills are composed of_____________?
A. Type V and VII collagen
B. Type I and III collagen
C. Type IV collagen
D. Type IV and III Collagen
✅ The correct answer is option A. Type V and VII collagen.