During inferior alveolar nerve block the needle of LA syringe is penetrated into parotid gland which of the following structure is most likely to be penetrated_____________?
Correct answer: D. External carotid artery
- A. Lingual nerve
- B. Lingual artery
- C. Internal carotid artery
- D. External carotid artery
Explanation
If an inferior alveolar nerve-block needle passes too far posteriorly into the parotid, it may enter structures that traverse the gland, including the external carotid artery. The internal carotid artery lies deeper and is not a normal parotid structure.
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