ADEX Head and Neck Anatomy 3

Question 1

The nasopalatine nerve innervates the anterior hard palate and exits through which foramen?

Accepted Answer

Incisive foramen

Answer

The nasopalatine nerve exits through the incisive foramen, located in the midline of the anterior hard palate just posterior to the maxillary central incisors.

Question 2

The greater palatine nerve exits through the greater palatine foramen and primarily innervates which area?

Accepted Answer

The posterior hard palate and adjacent palatal gingiva

Answer

The greater palatine nerve exits the greater palatine foramen (medial to the maxillary third molar) and innervates the posterior hard palate and adjacent palatal gingiva from the canine area posteriorly.

Question 3

Which cranial nerve provides motor innervation to all intrinsic and most extrinsic muscles of the tongue?

Accepted Answer

Hypoglossal nerve (CN XII)

Answer

The hypoglossal nerve (CN XII) provides motor innervation to all intrinsic tongue muscles and most extrinsic tongue muscles, controlling tongue movement.

Question 4

The temporomandibular joint (TMJ) is classified as which type of synovial joint?

Accepted Answer

Ginglymoarthrodial (combined hinge and gliding) joint

Answer

The TMJ is a ginglymoarthrodial joint capable of both rotational (hinge) movement in the lower joint space and translational (gliding) movement in the upper joint space, separated by the articular disc.

Question 5

Which muscle of mastication acts as the primary depressor of the mandible (jaw opener) when contracting bilaterally?

Accepted Answer

Lateral pterygoid

Answer

The inferior head of the lateral pterygoid muscle pulls the condyle and disc forward (translation) during opening, making it the primary muscle of mastication that opens the jaw.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Head and Neck Anatomy 3