Oral Anatomy MCQs

Page No. 13

Basically TMJ is a_____________?


aBall and socket joint

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bHinge and axis joint

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cSynovial joint

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dDiartmodal joint

✓


View Answer Diartmodal joint

Which of the following muscles moves the condyle and articular disc anterior and downwards on glenoid fossa______________?


aLateral pterygoid

✓


bMedial pterygoid

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cTemporalies- anterior fibers

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dTemporalies- posterior fibers

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View Answer Lateral pterygoid

Position and movement of articular disc of TMJ is controlled by fibers of_____________?


aLower head of lateral pterygoid muscle

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bSphenomandibular ligament

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cSuperficial head of medial pterygoid muscle

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dUpper head of lateral pterygoid muscle

✓



Thinnest labial plate is found in the region of____________?


aUpper central incisors

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bLower central incisors

✓


cUpper canines

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dLower canines

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Which of the following movement (s) is / are involved in the opening of the mouth?


aOnly hinge ( rotation )

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bOnly translation

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cHinge followed by translation

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dTranslation followed by hinge

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Articular disc of TMJ is__________?


aThickest posteriorly

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bNarrow in the centre

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cStrengthened by lateral pterygoid

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dAll of the above

✓


View Answer All of the above

The zygomatic bone does not articulate with________________?


aFrontal bone

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bMaxillary bone

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cNasal bone

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dTemporal bone

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View Answer Nasal bone

Which of the following is not a structural element of the temporomandibular joint ?


aSigmoid notch

✓


bArticular disc

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cCapsular ligament

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dJoint cavities

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View Answer Sigmoid notch

On opening the mouth , if the jaw deviates to the right side, it indicates the paralysis of__________?


aRight lateral pterygoid

✓


bLeft lateral pterygoid

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cRight medial pterygoid

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dLeft medial pterygoid

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Depression of mandible is achieved by_______________?


aDigastric

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bLateral pterygoid

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cGeniohyoid

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dAll of the above

✓


View Answer All of the above

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