CMT Orofacial Anatomy & Physiology 2

Question 1

Which muscle is primarily responsible for depressing the mandible during opening?

Accepted Answer

Lateral pterygoid

Answer

The lateral pterygoid muscle pulls the condyle forward and downward, initiating mandibular depression.

Question 2

The palatoglossus muscle connects the tongue to which structure?

Accepted Answer

Soft palate

Answer

The palatoglossus originates from the soft palate and inserts into the lateral tongue, forming the anterior tonsillar pillar.

Question 3

Which cranial nerve provides motor innervation to the muscles of mastication?

Accepted Answer

CN V3

Answer

The mandibular branch of the trigeminal nerve (CN V3) provides motor innervation to the masseter, temporalis, and pterygoid muscles.

Question 4

The frenulum linguae connects the tongue to which oral structure?

Accepted Answer

Floor of the mouth

Answer

The lingual frenulum is a fold of mucous membrane connecting the inferior tongue to the floor of the mouth.

Question 5

Which bone houses the temporomandibular joint (TMJ) fossa?

Accepted Answer

Temporal bone

Answer

The mandibular fossa of the temporal bone forms the socket component of the TMJ.

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