NDHCE Head and Neck Anatomy 2

Question 1

Which structure forms the floor of the mouth and attaches the tongue to the mandible?

Accepted Answer

Mylohyoid muscle

Answer

The mylohyoid muscle forms the muscular floor of the oral cavity, supporting the tongue and floor of the mouth.

Question 2

Which lymph node group is the first to receive lymphatic drainage from the tip of the tongue and lower incisors?

Accepted Answer

Submental lymph nodes

Answer

The submental lymph nodes, located beneath the chin, receive primary lymphatic drainage from the tip of the tongue, lower lip, and mandibular incisors.

Question 3

The temporomandibular joint (TMJ) is a synovial joint between which two bony structures?

Accepted Answer

Mandibular condyle and temporal bone (glenoid fossa)

Answer

The TMJ is formed between the condylar head of the mandible and the glenoid (mandibular) fossa of the temporal bone, separated by an articular disc.

Question 4

Which cranial nerve controls the motor function of the tongue?

Accepted Answer

Hypoglossal nerve (XII)

Answer

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

Question 5

The cementoenamel junction (CEJ) is a critical landmark in dental hygiene because it:

Accepted Answer

Serves as the reference point for measuring clinical attachment level

Answer

The CEJ is the reference point from which clinical attachment loss (CAL) is measured, making it the most important anatomical landmark for periodontal assessment.

NDHCE - National Dental Hygiene Certification Examination Practice Test

NDHCE - National Dental Hygiene Certification Examination Practice Test

NDHCE Head and Neck Anatomy 2