Head and Neck Anatomy Flashcards

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

Answer: Mylohyoid muscle

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

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

Answer: Submental lymph nodes

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

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

Answer: Mandibular condyle and temporal bone (glenoid fossa)

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.

Which cranial nerve controls the motor function of the tongue?

Answer: Hypoglossal nerve (XII)

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

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

Answer: Serves as the reference point for measuring clinical attachment level

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

Which of the following best describes the anatomical location of the pterygomandibular raphe?

Answer: A fibrous band between the buccinator muscle and the superior pharyngeal constrictor

The pterygomandibular raphe is a fibrous band stretching from the pterygoid hamulus to the posterior mandible, separating and serving as the origin for the buccinator and superior pharyngeal constrictor muscles.