Pharynx and tonsils: compartments of the parapharyngeal space: 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 · Pharynx and tonsils: compartments of the parapharyngeal space

Sample item

A parapharyngeal abscess in the poststyloid compartment is more dangerous than one in the prestyloid compartment. Which structures lie in the poststyloid compartment?

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

The answer and the reasoning

B. Carotid sheath contents and cranial nerves IX to XII

The styloid diaphragm divides the space into prestyloid (fat, deep lobe of parotid, branches of the mandibular nerve) and poststyloid compartments. The poststyloid compartment contains the internal carotid artery, internal jugular vein, vagus nerve and cranial nerves IX, XI and XII, plus the sympathetic chain. Abscess here may erode the carotid or thrombose the jugular vein.

Option by option

  • A. Thyroid gland and recurrent laryngeal nerve

    The thyroid lies in the visceral compartment.

  • B. Carotid sheath contents and cranial nerves IX to XII (correct)

    Correct. Great vessels and lower cranial nerves lie behind the styloid.

  • C. Parotid tail and retromandibular vein

    These belong to the prestyloid compartment.

  • D. Sublingual gland only

    The sublingual gland is in the floor of the mouth.

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 B, Carotid sheath contents and cranial nerves IX to XII. The styloid diaphragm divides the space into prestyloid (fat, deep lobe of parotid, branches of the mandibular nerve) and poststyloid compartments.

Why is "Thyroid gland and recurrent laryngeal nerve" not the answer?

The thyroid lies in the visceral compartment.

Why is "Parotid tail and retromandibular vein" not the answer?

These belong to the prestyloid compartment.

Why is "Sublingual gland only" not the answer?

The sublingual gland is in the floor of the mouth.

What concept does this question test?

It tests Pharynx and tonsils: compartments of the parapharyngeal space in ENT. The poststyloid compartment contains the internal carotid artery, internal jugular vein, vagus nerve and cranial nerves IX, XI and XII, plus the sympathetic chain. Abscess here may erode the carotid or thrombose the jugular vein.

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 Pharynx and tonsils: compartments of the parapharyngeal space?

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.