Larynx: Broyles ligament: practice question

A ENT question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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ENT · Larynx: Broyles ligament

Sample item

A glottic carcinoma involves the anterior commissure and is found to have spread directly into the thyroid cartilage. Which structure provides this route of spread?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Broyles ligament, the anterior commissure tendon, which lacks perichondrium

Broyles ligament, the anterior commissure tendon, is where the vocal ligaments attach to the thyroid cartilage, and the perichondrium is deficient there. Tumour crosses it directly into the cartilage and the pre-epiglottic space. Anterior commissure disease is therefore harder to treat conservatively.

Option by option

  • A. The cricothyroid membrane

    The cricothyroid membrane lies lower and is used for emergency airway access.

  • B. The conus elasticus

    The conus elasticus limits subglottic spread to a degree and is not the anterior commissure tendon.

  • C. Broyles ligament, the anterior commissure tendon, which lacks perichondrium (correct)

    Correct. The deficient perichondrium offers little barrier.

  • D. The quadrangular membrane

    The quadrangular membrane lies in the supraglottis.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this ENT question

What is the answer to this ENT question?

The best answer is C, Broyles ligament, the anterior commissure tendon, which lacks perichondrium. Broyles ligament, the anterior commissure tendon, is where the vocal ligaments attach to the thyroid cartilage, and the perichondrium is deficient there.

Why is "The cricothyroid membrane" not the answer?

The cricothyroid membrane lies lower and is used for emergency airway access.

Why is "The conus elasticus" not the answer?

The conus elasticus limits subglottic spread to a degree and is not the anterior commissure tendon.

Why is "The quadrangular membrane" not the answer?

The quadrangular membrane lies in the supraglottis.

What concept does this question test?

It tests Larynx: Broyles ligament in ENT. Tumour crosses it directly into the cartilage and the pre-epiglottic space. Anterior commissure disease is therefore harder to treat conservatively.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Larynx: Broyles ligament?

Learn tuning fork results and audiogram patterns by sketching them. Then use the flashcards and the other ENT questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.