ENT Otolaryngologic Anatomy 5

Question 1

Where does Stensen's (parotid) duct open into the oral cavity?

Accepted Answer

Buccal mucosa opposite the maxillary second molar

Answer

Stensen's duct passes through the buccinator and opens on a papilla opposite the upper second molar.

Question 2

In the floor of mouth, how does the lingual nerve relate to Wharton's (submandibular) duct?

Accepted Answer

It loops under the duct, passing from lateral to medial

Answer

The lingual nerve crosses under Wharton's duct from lateral to medial, so it is at risk during duct and gland surgery.

Question 3

Which structure divides cervical lymph node level IIA from level IIB?

Accepted Answer

Spinal accessory nerve

Answer

Level II is divided into IIA (in front of the spinal accessory nerve) and IIB (behind it), which matters when a selective neck dissection keeps the nerve.

Question 4

Which tongue muscle is NOT supplied by the hypoglossal nerve?

Accepted Answer

Palatoglossus

Answer

The palatoglossus is supplied by the vagus nerve through the pharyngeal plexus; all other intrinsic and extrinsic tongue muscles get CN XII.

Question 5

Taste from the anterior two-thirds of the tongue is carried by which nerve?

Accepted Answer

Chorda tympani

Answer

Taste fibers travel with the lingual nerve but belong to the chorda tympani of CN VII and synapse in the nucleus of the solitary tract.

ENT - Ear, Nose, and Throat Specialist Certification Practice Test

ENT - Ear, Nose, and Throat Specialist Certification Practice Test

ENT Otolaryngologic Anatomy 5