Question 1. Parasympathetic supply to submandibular gland?
A. Glossopharyngeal nerve
B. Chorda tympani nerve
C. Auriculotemporal nerve
D. Greater petrosal nerve
Correct answer: Chorda tympani nerve
Explanation
Preganglionic parasympathetic fibers originate in the superior salivatory nucleus and pass via the facial nerve into the chorda tympani.
Why other options are incorrect
Glossopharyngeal nerve supplies the parotid gland.
Auriculotemporal nerve carries postganglionic fibers to parotid gland.
Greater petrosal nerve supplies the lacrimal gland.
Teaching points
Submandibular gland produces most resting saliva.
Question 2. Tumor with perineural invasion?
A. Mucoepidermoid carcinoma
B. Adenoid cystic carcinoma
C. Acinic cell carcinoma
D. Warthin tumor
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Correct answer: Adenoid cystic carcinoma
Explanation
Adenoid cystic carcinoma characteristically spreads along nerves.
Teaching points
Cribriform Swiss cheese pattern is typical.
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Correct answer: Adenoid cystic carcinoma
Explanation
Adenoid cystic carcinoma characteristically spreads along nerves.
Teaching points
Cribriform Swiss cheese pattern is typical.
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Question 3. Facial nerve trunk landmark during parotidectomy?
A. Zygomatic arch
B. Tragal pointer
C. Mandibular notch
D. Styloid process
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Correct answer: Tragal pointer
Explanation
The tragal pointer is a reliable surgical landmark to identify the facial nerve trunk.
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