INBDE (Integrated National Board Dental Examination) Practice Exam

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Where does the inferior head insert?

Condylar neck
Coronoid process
Mandibular foramen
Zygomatic arch

The correct answer is: Condylar neck

The correct answer is A. Condylar neck. The inferior head of the lateral pterygoid muscle inserts onto the condylar neck of the mandible. This muscle plays a crucial role in the temporomandibular joint (TMJ) by aiding in the depression and protrusion of the mandible, as well as assisting in the side-to-side movement of the jaw during chewing. Options B, C, and D are incorrect: - The coronoid process is associated with the temporalis muscle, not the inferior head of the lateral pterygoid muscle. - The mandibular foramen is an opening on the mandible through which the inferior alveolar nerve and blood vessels pass, not a site of insertion for the inferior head of the lateral pterygoid muscle. - The zygomatic arch serves as the attachment site for the masseter muscle and the temporalis muscle, not the inferior head of the lateral pterygoid muscle.