2481. All of the following muscles retract scapula except_______________?
A. Trapezius
B. Rhomboid major
C. Rhomboid minor
D. Levator scapulae
✅ The correct answer is option D. Levator scapulae.
Medical
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2482. Cytochromes are_____________?
A. Pyridine nucleotides
B. Riboflavin containing nucleotides
C. Metal containing flavoproteins
D. Iron-porphyrin proteins
✅ The correct answer is option D. Iron-porphyrin proteins.
2483. Which of the following enzymes are involved in bone formation________________?
A. Alkaline phosphatase and urease
B. Catalase and phosphorylase
C. Alkaline phosphatase and phosphorylase
D. Acid phosphatase and catalase
✅ The correct answer is option C. Alkaline phosphatase and phosphorylase.
2484. All of the following are digastrics, except ?
A. Muscle fibres in the liqament of Treitz
B. Omohyoid
C. Occipitofrontalis
D. Sternocleidomastoid
✅ The correct answer is option D. Sternocleidomastoid.
2485. The logical explanation for the unique anticariogenic property of most silicate cements is______________?
A. The reduction in enamel solubility due to fluoride uptake by enamel
B. That beryllium flux is used in silicates
C. That silicates show very little leakage at the margins of the restoration
D. Due to the high silica content
✅ The correct answer is option A. The reduction in enamel solubility due to fluoride uptake by enamel.
2486. All of the following muscles are grouped together as “muscles of mastication” except_______________?
A. Buccinator
B. Masseter
C. Temporalis
D. Pterygoids
✅ The correct answer is option A. Buccinator.
2487. The function of Carotid body is_______________?
A. Measures the change in Po2 in arterial blood
B. Measures Po2 in venous blood
C. Measures the changed in CO2 in arterial blood
D. Measures the change in CO2 in venous blood
✅ The correct answer is option A. Measures the change in Po2 in arterial blood.
2488. Succinyl choline acts to block neuromuscular transmission by_______________?
A. Inhibiting cholinesterase
B. Inhibiting the CNS
C. Depolarizing the motor end plate of skeletal muscle
D. Blocking the release of acetyl choline at the end plate
✅ The correct answer is option C. Depolarizing the motor end plate of skeletal muscle.
2489. Incremental lines of Retzius appear_____________?
A. As lines in the enamel running at right angles to the enamel surface
B. As lines in the dentin running at right angles to the dentino-enamel junction
C. In enamel and follow the apposition pattern
D. In dentin and follow the appositional pattern
✅ The correct answer is option C. In enamel and follow the apposition pattern.
2490. pH of fully set zinc phosphate______________?
A. 3-4
B. 4-5
C. 6-7
D. 7-8
✅ The correct answer is option C. 6-7.