MFDS Head and Neck Anatomy 3

Question 1

The nasopalatine nerve enters the hard palate through which foramen?

Accepted Answer

Incisive foramen

Answer

The nasopalatine nerve (from CN V2) descends through the nasopalatine canal and emerges through the incisive foramen in the midline of the anterior hard palate, supplying the mucosa behind the upper incisors.

Question 2

The greater palatine nerve supplies the palatal mucosa in which region?

Accepted Answer

Hard palate from the canine region to the posterior margin

Answer

The greater palatine nerve, emerging from the greater palatine foramen, supplies the mucosa of the hard palate from the canine tooth region posteriorly to the soft palate junction.

Question 3

Which muscle forms the muscular floor ('diaphragm') of the oral cavity?

Accepted Answer

Mylohyoid

Answer

The paired mylohyoid muscles, meeting at a midline raphe and attached to the mylohyoid line of the mandible and the hyoid bone, form the muscular floor of the mouth.

Question 4

The posterior superior alveolar nerve typically supplies which maxillary molar roots?

Accepted Answer

All roots of the second and third molars, and the distobuccal and palatal roots of the first molar

Answer

The posterior superior alveolar nerve typically supplies the maxillary second and third molars in their entirety and the distobuccal and palatal roots of the first molar; the mesiobuccal root of the first molar is usually supplied by the middle superior alveolar nerve.

Question 5

Which fascial space communicates directly with the infratemporal fossa and is targeted during an inferior alveolar nerve block?

Accepted Answer

Pterygomandibular space

Answer

The pterygomandibular space, bounded medially by the medial pterygoid muscle and laterally by the ramus of the mandible, communicates directly with the infratemporal fossa superiorly and contains the inferior alveolar nerve and vessels.

MFDS Part 1 Practice Test

MFDS Part 1 Practice Test

MFDS Head and Neck Anatomy 3