Head & Neck — Flashcards

Flashcard 141: Which cranial nerve is most susceptible to injury to the cavernous sinus? _____

Answer: CN VI (abducens)

Flashcard 142: Patients with temporomandibular disorder that involve the _____ nerve can have both jaw pain and otologic symptoms

Answer: mandibular

Flashcard 143: The majority of the external ear receives sensory innervation via nerves derived from what two nerve roots?_____

Answer: C2, C3

Flashcard 144: _____ are benign tumors of nasal mucosa composed of large blood vessels and fibrous tissues

Answer: Angiofibromas

Flashcard 145: What is the most common site for ectopic thyroid tissue?_____

Answer: The tongue

Flashcard 146: The motor innervation to most muscles of the tongue is via CN _____

Answer: XII

Flashcard 147: Which branch of the trigeminal nerve provides general sensation to the forehead, scalp, and cornea? _____

Answer: Ophthalmic (V1)

Flashcard 148: Which artery supplies the inner layers of the retina and travels within the optic nerve?

Answer: Central retinal artery

Extra: The central retinal artery is a branch of the ophthalmic artery. It enters the optic nerve and supplies the inner layers of the retina.

Flashcard 149: Which tongue muscle draws the sides of the tongue upwards (creates a trough for swallowing)? _____

Answer: Styloglossus

Flashcard 150: What displacement of the globe is typically seen in orbital floor fractures?

Answer: Enophthalmos

Extra: Blowout fractures of the orbital floor result in herniation of orbital contents (fat and inferior rectus muscle) into the maxillary sinus, causing posterior displacement of the eye (enophthalmos). This may also lead to diplopia on upward gaze due to inferior rectus entrapment.