ENT Core Concepts and Principles 2

Question 1

Taste sensation from the anterior two-thirds of the tongue travels via the chorda tympani, a branch of which cranial nerve?

Accepted Answer

Facial nerve (CN VII)

Answer

The chorda tympani carries special taste afferents from the anterior two-thirds of the tongue as part of the facial nerve.

Question 2

Where do most cases of epistaxis originate?

Accepted Answer

Kiesselbach's plexus on the anterior septum

Answer

About 90% of nosebleeds arise from Kiesselbach's plexus (Little's area) on the anterior septum.

Question 3

A patient has a negative Rinne test in the left ear and a Weber test that lateralizes to the left. What is the most likely finding?

Accepted Answer

Left conductive hearing loss

Answer

Bone conduction louder than air conduction, with Weber lateralizing to the same side, points to conductive loss in that ear.

Question 4

The recurrent laryngeal nerve supplies every intrinsic laryngeal muscle except which one?

Accepted Answer

Cricothyroid

Answer

The cricothyroid is supplied by the external branch of the superior laryngeal nerve.

Question 5

Which muscle is the only abductor of the vocal folds?

Accepted Answer

Posterior cricoarytenoid

Answer

The posterior cricoarytenoid rotates the arytenoids outward to open the glottis.

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