NBDHE Head and Neck Anatomy Questions and Answers

Question 1

A patient is asked to protrude their mandible forward. Which muscle is the PRIMARY agonist for this action?

Accepted Answer

Lateral pterygoid muscle

Answer

Temporalis muscle

Answer

Masseter muscle

Answer

Medial pterygoid muscle

Question 2

A patient presents with a painful swelling on the floor of the mouth, inferior to the tongue, which worsens just before and during meals. A blockage of which structure is the MOST likely cause of these symptoms?

Accepted Answer

Wharton's duct

Answer

Stensen's duct

Answer

Bartholin's duct

Answer

Ducts of Rivinus

Question 3

During a mandibular block injection, a patient experiences immediate numbness of the lower lip and chin on the injected side. This indicates the anesthetic has effectively reached which terminal nerve branch?

Accepted Answer

Mental nerve

Answer

Lingual nerve

Answer

Buccal nerve

Answer

Infraorbital nerve

Question 4

An infection originating from a mandibular first molar would MOST likely cause initial tenderness and enlargement in which group of lymph nodes?

Accepted Answer

Submandibular nodes

Answer

Submental nodes

Answer

Deep cervical nodes

Answer

Parotid nodes

Question 5

Which of the following structures passes through the foramen ovale of the sphenoid bone?

Accepted Answer

Mandibular division of the trigeminal nerve (V3)

Answer

Maxillary division of the trigeminal nerve (V2)

Answer

Ophthalmic division of the trigeminal nerve (V1)

Answer

Middle meningeal artery

Question 6

During the initial phase of swallowing (deglutition), which group of muscles is primarily responsible for elevating the hyoid bone and the floor of the mouth?

Accepted Answer

Suprahyoid muscles

Answer

Infrahyoid muscles

Answer

Muscles of mastication

Answer

Muscles of facial expression