medical MCQs – Page 495

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

9881. When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________?
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A. Filling cone

B. Cutting cone

C. Howships cone

D. Haversion cone

9882. Of the total amount of saliva secreted by all the salivary glands, about 60% is secreted by the_____________?
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A. Sublingual glands

B. Submandibular glands

C. Parotid glands

D. None of the above

9883. Bartholins duct is the name of_______________?
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A. Lacrimal duct

B. Sublingual duct

C. Submandibular glands

D. Parotid duct

9884. The intimal B cells of synovical memrbane of temporomandibular joint are_______________?
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A. Fibroblast like

B. Lmphocyte like

C. Plasma cell like

D. Macrophage like

9885. The tooth present close to maxillary sinus is_________________?
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A. 1st premolar

B. 2nd premolar

C. 1st molar

D. 2nd molar

9886. Which of the following is not correct ?
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A. In chronic infections, the pain may mimic neuralgia of dental origin

B. None of the above

C. Malignant lesions of maxillary sinus produce their manifestations in maxillary teeth

D. In case of pituitary gigantis, all sinuses assume a larger volume than normal

9887. The neutralization of saliva is due to______________?
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A. Ammonia

B. Bicarbonates

C. Mucin

D. Amino acids

9888. The duct(s) of gland(s) opening into the floor of the mouth is (are)_______________?
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A. Von Ebner

B. submandibular and parotid

C. Sublingual and parotid

D. Submandibular and sublingual

9889. Which of the following is true?
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A. Maxillary sinus is four- sided pyramid

B. Maxillary sinus communicates with environment through middle meatus and nasal vestibule

C. In most of the cases, the main ostium is present in posterior third of hiatus semilunar

D. All of the above

9890. Bone at forming stage has_________________?
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A. None of the above

B. Megakaryocytes, osteoblasts, osteoclasts

C. Odontoblasts & megakaryocyte

D. Osteoclasts, osteoblasts, osteoid

9891. Which of the following is correct?
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A. Roof of mandible contains thin, compact bone

B. All of the above

C. Condyle contains red bone marrow

D. Articular tubercle is composed of spongy bone covered with thin compact bone

9892. Acid neutralizing substance in saliva_____________?
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A. Bicarbonate

B. Chlorides

C. NH3

D. Carbonate

9893. Maxillary sinus is described as a four sided pyramid containing base, apex, roof and floor. The apex of maxillary sinus extends________________?
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A. Laterally into zygomatics process of maxilla

B. Laterally into lateral nasal wall

C. Superiorly into floor of orbit

D. Medially into zygomatic process of maxilla

9894. Second arch derivatives are all except_________________?
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A. Superior part of hyoid bone

B. Malleus and incus

C. Styloid process

D. Stapes

9895. Normal interincisal distance is____________________?
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A. 38 mm

B. 28 mm

C. 58 mm

D. 48 mm

9896. Which of the following is true_____________?
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A. All of the above

B. The third auditory ossicle or stapes develops from 2nd branchial arch

C. Incus and malleus develops from mecketls cartilage

D. All the bones of upper face develop by intra membranous ossification

9897. Whartons duct drains the_______________?
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A. Parotid

B. Lacrimal gland

C. Pancreas

D. Submandibular gland

9898. Saliva is secreted by____________?
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A. Parotid gland

B. Major & minor salivary glands

C. Major salivary glands

D. Minor salivary glands

9899. Which of the following is not correct?
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A. False denticles contains many dentinal tubules

B. Embedded denticles are entirely surrounded by dentin (embedded in dentin)

C. Free denticles are entirely surrounded by pulp tissue(free of dentin)

D. Attached denticles are partly fused with dentin

9900. Functional importance of maxillary sinus is______________?
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A. Protects the brain against exposure to cold air by arresting air in sinus temporarily

B. Resonance of voice and enhancement of faciocranial resistance to mechanical shock

C. Lightening of skull weight and production of bactericidal lysozyme to the nasal cavity

D. All of the above

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