Chapter 37: Salivary Gland Anatomy
Bailey's Chapter 37
- 1.
CN VII exits the styloidmastoid foramen and
- A.
Pass medially to the styloid process
- B.
Passes laterally to the styloid process
- C.
Passes inferiorly to the styloid process
- D.
Splits the styloid process in to upper and lower divisions
Correct Answer
B. Passes laterally to the styloid processExplanation
CN VII passes medially to the mastoid tip and laterally to the styloid process.Rate this question:
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- 2.
Which of the following is not a branch of cranial nerve 7
- A.
Stylohyoid muscle
- B.
Stylopharyngeous muscle
- C.
Posterior belly of digastrics
- D.
Postauricular
Correct Answer
B. Stylopharyngeous muscleExplanation
Stylopharyngeus is innervated by IX.Rate this question:
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- 3.
Auricular temporal nerve exits
- A.
Foramen spinosum
- B.
Foramen rotundum
- C.
Foramen ovale
- D.
Foramen magnum
Correct Answer
C. Foramen ovaleExplanation
Foramen spinosum = middle meningeal artery. Foramen rotundum = Maxillary nerve (V2). Foramen ovale = Mandibular nerve (V3). Foramen magnum = Spinal cord.Rate this question:
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- 4.
A 65 year old male has a superficial parotidectomy and post-operatively is botheredby facial sweating when he eats. The appropriate medication to treat this patient
- A.
Blocks release of presynaptic acetylcholine
- B.
Block post synaptic binding of acetylcholine
- C.
Prevents re-uptake of acetylcholine
- D.
Irreversibly binds N-acetyl end plates
Correct Answer
A. Blocks release of presynaptic acetylcholineExplanation
Botulinum toxin inhibits the release of acetylcholine from the presynaptic vesicles. Gustatory sweating (Frey's syndrome) is caused by the parasympathetic salivary nerves cross innervating the sympathetic sweat glands.Rate this question:
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- 5.
The marginal mandibular nerve
- A.
Crosses anterior to the facial artery
- B.
Crosses posterior to the facial artery
- C.
Has no relation to the facial artery
- D.
Is always inferior to the facial artery
Correct Answer
A. Crosses anterior to the facial arteryExplanation
The marginal mandibular nerve crosses anterior to the facial artery. This means that the nerve passes in front of the artery when traveling through the face.Rate this question:
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- 6.
The gland that is the most serous in overall saliva composition is
- A.
Lingual
- B.
Minor
- C.
Submandibular
- D.
Parotid
Correct Answer
D. ParotidExplanation
Parotid is the most serous gland. Submandibular gland is mixed serous:mucinous. Lingual and Minor salivary glands are predominantly mucinous.Rate this question:
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- 7.
In relation to Wharton’s duct the hypoglossal nerve lies
- A.
Superior
- B.
Posterior
- C.
Anterior
- D.
Inferior
Correct Answer
D. InferiorExplanation
The hypoglossal nerve lies inferior to Wharton's duct.Rate this question:
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- 8.
The greatest stimulus of salivation is
- A.
Olfaction
- B.
Sweet taste
- C.
Bitter taste
- D.
Sour taste
Correct Answer
D. Sour tasteExplanation
One treatment for parotitis is to suck on sour candy. This promotes salivation, thus discouraging stasis which may have been the nidus for the infection.Rate this question:
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- 9.
Postsynaptic parasympathetic nerve fibers for the lingual gland travel on
- A.
Jacobson’s nerve
- B.
Lesser petrosal
- C.
Lingual nerve
- D.
CN VII
Correct Answer
D. CN VIIExplanation
Jacobsen's nerve = IX. Lesser petrosal = IX to the lacrimal gland via the otic ganglion. Lingual nerve provides sensation to tongue via V. Chorda tympani is a branch of VII.Rate this question:
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- 10.
The majority of salivary flow at rest is provided by
- A.
Parotid
- B.
Submandibular gland
- C.
Sublingual gland
- D.
Minor salivary glands
Correct Answer
B. Submandibular glandExplanation
Parotid gland is responsible for the majority of saliva secretion during mastication.Rate this question:
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- 11.
A 47 y/o AA male presents with left sided facial paralysis, blurred vision, andunilateral facial edema. What is the syndrome?
Correct Answer
Heerfordt's syndrome. This is a manifestation of sarcoidosis. The triad includes parotitis, uveitis, and facial paralysis.Explanation
Heerfordt's syndrome is a manifestation of sarcoidosis, a condition characterized by the formation of granulomas in various organs. In this case, the 47-year-old African American male presents with left-sided facial paralysis, blurred vision, and unilateral facial edema. These symptoms align with the triad of Heerfordt's syndrome, which includes parotitis (inflammation of the parotid gland), uveitis (inflammation of the uvea in the eye), and facial paralysis. Therefore, Heerfordt's syndrome is the correct answer in this case.Rate this question:
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