A. In cross sections enamel rods appear hexagonal and resembles fish scales
B. The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically
C. The apatite crystals are parallel to bodies and deviate 65° from the tails
D. All of the above
Related Mcqs:
- Which of the following statement is false______________?
A. Resorption of roots of deciduous incisors and canines begins on their lingual surfaces
B. Resorption of roots of deciduous molars begins on their inner surfaces
C. Shedding of deciduous teeth is delayed in the absence of their successor teeth
D. None of the above - Which of the following statement is correct?
A. Enamel cannot form in absence of dentin
B. The formation of enamel and dentin are independent of each other
C. Enamel formation can occur in absence of dentin
D. None of the above - One of the following statement is unique about circumpulpal dentine______________?
A. Collagen fibers are oriented perpendicular to DEJ
B. Vonkorff fibers are present
C. Contain phosphophoryn
D. Requires matrix vesicle for mineralization - Which of the following statement is true______________?
A. Cementum is thinnest at CEJ (20-50μm)
B. Cementum is thickest towards the apex (150-200μm)
C. The apical foramen is surrounded by cementum
D. All of the above - Which of the following statement is TRUE? The hydrolysis of lactose yields glucose and galactose_____________?
A. The hydrolysis of lactose yields glucose and galactose
B. The hydrolysis of maltose yields glucose and fructose
C. The hydrolysis of sucrose yields only glucose
D. All of the above statements are true - Which of the following statement about P24 antigen of HIV is Not True ?
A. It can be detected during the window period
B. Free P24 antigen disappears after the appearance of IgM response to it:
C. Virus load parallel P24 titre
D. It remains during asymptomatic phase - Each of the following statement is correct about metronidazole EXCEPT that it_______________?
A. is a broad spectrum antiprotozoal drug
B. Active against bacteroides and clostridium
C. An effective alternative for infection caused by aerobic gram positive cocci
D. May cause peripheral neuropathy on prolonged use - Which of the following statement is true ?
A. Kaposi sarcoma is a benign tumour
B. Kaposi sarcoma is found in HIV positive subjects
C. Kaposi sarcoma is malignant fast growing tumour
D. Kaposi sarcoma is an ectodermal derivative - Which of the following statement is false in relation to myofacial pain dysfunction syndrome ?
A. Maily affects young females
B. is caused by muscle fatigue due to chronic oral habits are grinding and clenching
C. Treatment involves construction of occlusal guard and stress free emotional condition
D. The perioral musculature becomes hypotonic - Which of the following statement is FALSE?
A. A salivary duct obstruction can cause a unilateral swelling in the floor of the mouth that is largest before a meal and smallest after a meal
B. The lesion termed a ranula is associated with the sublingual salivary gland
C. The sublingual salivary gland is the most common site of salivary gland neoplasia
D. A pleomorphic adenoma is the most common salivary gland neoplasm
