NBDHE Head and Neck Anatomy 2

Question 1

The parotid gland's secretory duct (Stensen's duct) opens into the oral cavity at which landmark?

Accepted Answer

The parotid papilla opposite the maxillary second molar

Answer

Stensen's duct (parotid duct) opens via the parotid papilla on the buccal mucosa opposite the maxillary second molar.

Question 2

Which cranial nerve provides sensory innervation to the anterior two-thirds of the tongue?

Accepted Answer

Lingual nerve (branch of V3 — trigeminal)

Answer

The lingual nerve (branch of the mandibular division of the trigeminal — V3) provides general somatic sensation (touch, pain, temperature) to the anterior two-thirds of the tongue.

Question 3

The mental foramen in adults is typically located:

Accepted Answer

Between the apices of the mandibular first and second premolars, on the buccal aspect

Answer

The mental foramen transmits the mental nerve and vessels and is located on the buccal (lateral) surface of the mandible, typically between the apices of the first and second premolars.

Question 4

Which muscle depresses the mandible (opens the mouth) and is innervated by the mylohyoid nerve?

Accepted Answer

Mylohyoid muscle

Answer

The mylohyoid muscle forms the floor of the mouth and assists in depressing the mandible and elevating the floor of the mouth; it is innervated by the mylohyoid nerve (branch of V3).

Question 5

The infraorbital nerve is a branch of which division of the trigeminal nerve, and what structures does it innervate?

Accepted Answer

Maxillary division (V2) — innervates maxillary anterior teeth, buccal gingiva, upper lip, and cheek skin

Answer

The infraorbital nerve is the terminal branch of V2 (maxillary division), exiting the infraorbital foramen to innervate maxillary anterior teeth, buccal gingiva, upper lip, and skin of the cheek.

NBDHE Test Practice Test

NBDHE Test Practice Test

NBDHE Head and Neck Anatomy 2